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1315 changed files with 117315 additions and 120658 deletions
|
|
@ -480,16 +480,17 @@ Description: information about CPUs heterogeneity.
|
|||
cpu_capacity: capacity of cpu#.
|
||||
|
||||
What: /sys/devices/system/cpu/vulnerabilities
|
||||
/sys/devices/system/cpu/vulnerabilities/meltdown
|
||||
/sys/devices/system/cpu/vulnerabilities/spectre_v1
|
||||
/sys/devices/system/cpu/vulnerabilities/spectre_v2
|
||||
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass
|
||||
/sys/devices/system/cpu/vulnerabilities/gather_data_sampling
|
||||
/sys/devices/system/cpu/vulnerabilities/itlb_multihit
|
||||
/sys/devices/system/cpu/vulnerabilities/l1tf
|
||||
/sys/devices/system/cpu/vulnerabilities/mds
|
||||
/sys/devices/system/cpu/vulnerabilities/meltdown
|
||||
/sys/devices/system/cpu/vulnerabilities/mmio_stale_data
|
||||
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass
|
||||
/sys/devices/system/cpu/vulnerabilities/spectre_v1
|
||||
/sys/devices/system/cpu/vulnerabilities/spectre_v2
|
||||
/sys/devices/system/cpu/vulnerabilities/srbds
|
||||
/sys/devices/system/cpu/vulnerabilities/tsx_async_abort
|
||||
/sys/devices/system/cpu/vulnerabilities/itlb_multihit
|
||||
/sys/devices/system/cpu/vulnerabilities/mmio_stale_data
|
||||
Date: January 2018
|
||||
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
|
||||
Description: Information about CPU vulnerabilities
|
||||
|
|
|
|||
109
Documentation/admin-guide/hw-vuln/gather_data_sampling.rst
Normal file
109
Documentation/admin-guide/hw-vuln/gather_data_sampling.rst
Normal file
|
|
@ -0,0 +1,109 @@
|
|||
.. SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
GDS - Gather Data Sampling
|
||||
==========================
|
||||
|
||||
Gather Data Sampling is a hardware vulnerability which allows unprivileged
|
||||
speculative access to data which was previously stored in vector registers.
|
||||
|
||||
Problem
|
||||
-------
|
||||
When a gather instruction performs loads from memory, different data elements
|
||||
are merged into the destination vector register. However, when a gather
|
||||
instruction that is transiently executed encounters a fault, stale data from
|
||||
architectural or internal vector registers may get transiently forwarded to the
|
||||
destination vector register instead. This will allow a malicious attacker to
|
||||
infer stale data using typical side channel techniques like cache timing
|
||||
attacks. GDS is a purely sampling-based attack.
|
||||
|
||||
The attacker uses gather instructions to infer the stale vector register data.
|
||||
The victim does not need to do anything special other than use the vector
|
||||
registers. The victim does not need to use gather instructions to be
|
||||
vulnerable.
|
||||
|
||||
Because the buffers are shared between Hyper-Threads cross Hyper-Thread attacks
|
||||
are possible.
|
||||
|
||||
Attack scenarios
|
||||
----------------
|
||||
Without mitigation, GDS can infer stale data across virtually all
|
||||
permission boundaries:
|
||||
|
||||
Non-enclaves can infer SGX enclave data
|
||||
Userspace can infer kernel data
|
||||
Guests can infer data from hosts
|
||||
Guest can infer guest from other guests
|
||||
Users can infer data from other users
|
||||
|
||||
Because of this, it is important to ensure that the mitigation stays enabled in
|
||||
lower-privilege contexts like guests and when running outside SGX enclaves.
|
||||
|
||||
The hardware enforces the mitigation for SGX. Likewise, VMMs should ensure
|
||||
that guests are not allowed to disable the GDS mitigation. If a host erred and
|
||||
allowed this, a guest could theoretically disable GDS mitigation, mount an
|
||||
attack, and re-enable it.
|
||||
|
||||
Mitigation mechanism
|
||||
--------------------
|
||||
This issue is mitigated in microcode. The microcode defines the following new
|
||||
bits:
|
||||
|
||||
================================ === ============================
|
||||
IA32_ARCH_CAPABILITIES[GDS_CTRL] R/O Enumerates GDS vulnerability
|
||||
and mitigation support.
|
||||
IA32_ARCH_CAPABILITIES[GDS_NO] R/O Processor is not vulnerable.
|
||||
IA32_MCU_OPT_CTRL[GDS_MITG_DIS] R/W Disables the mitigation
|
||||
0 by default.
|
||||
IA32_MCU_OPT_CTRL[GDS_MITG_LOCK] R/W Locks GDS_MITG_DIS=0. Writes
|
||||
to GDS_MITG_DIS are ignored
|
||||
Can't be cleared once set.
|
||||
================================ === ============================
|
||||
|
||||
GDS can also be mitigated on systems that don't have updated microcode by
|
||||
disabling AVX. This can be done by setting gather_data_sampling="force" or
|
||||
"clearcpuid=avx" on the kernel command-line.
|
||||
|
||||
If used, these options will disable AVX use by turning off XSAVE YMM support.
|
||||
However, the processor will still enumerate AVX support. Userspace that
|
||||
does not follow proper AVX enumeration to check both AVX *and* XSAVE YMM
|
||||
support will break.
|
||||
|
||||
Mitigation control on the kernel command line
|
||||
---------------------------------------------
|
||||
The mitigation can be disabled by setting "gather_data_sampling=off" or
|
||||
"mitigations=off" on the kernel command line. Not specifying either will default
|
||||
to the mitigation being enabled. Specifying "gather_data_sampling=force" will
|
||||
use the microcode mitigation when available or disable AVX on affected systems
|
||||
where the microcode hasn't been updated to include the mitigation.
|
||||
|
||||
GDS System Information
|
||||
------------------------
|
||||
The kernel provides vulnerability status information through sysfs. For
|
||||
GDS this can be accessed by the following sysfs file:
|
||||
|
||||
/sys/devices/system/cpu/vulnerabilities/gather_data_sampling
|
||||
|
||||
The possible values contained in this file are:
|
||||
|
||||
============================== =============================================
|
||||
Not affected Processor not vulnerable.
|
||||
Vulnerable Processor vulnerable and mitigation disabled.
|
||||
Vulnerable: No microcode Processor vulnerable and microcode is missing
|
||||
mitigation.
|
||||
Mitigation: AVX disabled,
|
||||
no microcode Processor is vulnerable and microcode is missing
|
||||
mitigation. AVX disabled as mitigation.
|
||||
Mitigation: Microcode Processor is vulnerable and mitigation is in
|
||||
effect.
|
||||
Mitigation: Microcode (locked) Processor is vulnerable and mitigation is in
|
||||
effect and cannot be disabled.
|
||||
Unknown: Dependent on
|
||||
hypervisor status Running on a virtual guest processor that is
|
||||
affected but with no way to know if host
|
||||
processor is mitigated or vulnerable.
|
||||
============================== =============================================
|
||||
|
||||
GDS Default mitigation
|
||||
----------------------
|
||||
The updated microcode will enable the mitigation by default. The kernel's
|
||||
default action is to leave the mitigation enabled.
|
||||
|
|
@ -16,3 +16,4 @@ are configurable at compile, boot or run time.
|
|||
multihit.rst
|
||||
special-register-buffer-data-sampling.rst
|
||||
processor_mmio_stale_data.rst
|
||||
gather_data_sampling.rst
|
||||
|
|
|
|||
|
|
@ -834,10 +834,6 @@
|
|||
|
||||
debugpat [X86] Enable PAT debugging
|
||||
|
||||
decnet.addr= [HW,NET]
|
||||
Format: <area>[,<node>]
|
||||
See also Documentation/networking/decnet.txt.
|
||||
|
||||
default_hugepagesz=
|
||||
[same as hugepagesz=] The size of the default
|
||||
HugeTLB page size. This is the size represented by
|
||||
|
|
@ -1349,6 +1345,26 @@
|
|||
Format: off | on
|
||||
default: on
|
||||
|
||||
gather_data_sampling=
|
||||
[X86,INTEL] Control the Gather Data Sampling (GDS)
|
||||
mitigation.
|
||||
|
||||
Gather Data Sampling is a hardware vulnerability which
|
||||
allows unprivileged speculative access to data which was
|
||||
previously stored in vector registers.
|
||||
|
||||
This issue is mitigated by default in updated microcode.
|
||||
The mitigation may have a performance impact but can be
|
||||
disabled. On systems without the microcode mitigation
|
||||
disabling AVX serves as a mitigation.
|
||||
|
||||
force: Disable AVX to mitigate systems without
|
||||
microcode mitigation. No effect if the microcode
|
||||
mitigation is present. Known to cause crashes in
|
||||
userspace with buggy AVX enumeration.
|
||||
|
||||
off: Disable GDS mitigation.
|
||||
|
||||
gcov_persist= [GCOV] When non-zero (default), profiling data for
|
||||
kernel modules is saved and remains accessible via
|
||||
debugfs, even when the module is unloaded/reloaded.
|
||||
|
|
@ -2709,21 +2725,22 @@
|
|||
Disable all optional CPU mitigations. This
|
||||
improves system performance, but it may also
|
||||
expose users to several CPU vulnerabilities.
|
||||
Equivalent to: nopti [X86,PPC]
|
||||
Equivalent to: gather_data_sampling=off [X86]
|
||||
kpti=0 [ARM64]
|
||||
nospectre_v1 [X86,PPC]
|
||||
nobp=0 [S390]
|
||||
nospectre_v2 [X86,PPC,S390,ARM64]
|
||||
spectre_v2_user=off [X86]
|
||||
spec_store_bypass_disable=off [X86,PPC]
|
||||
ssbd=force-off [ARM64]
|
||||
kvm.nx_huge_pages=off [X86]
|
||||
l1tf=off [X86]
|
||||
mds=off [X86]
|
||||
tsx_async_abort=off [X86]
|
||||
kvm.nx_huge_pages=off [X86]
|
||||
mmio_stale_data=off [X86]
|
||||
no_entry_flush [PPC]
|
||||
no_uaccess_flush [PPC]
|
||||
mmio_stale_data=off [X86]
|
||||
nobp=0 [S390]
|
||||
nopti [X86,PPC]
|
||||
nospectre_v1 [X86,PPC]
|
||||
nospectre_v2 [X86,PPC,S390,ARM64]
|
||||
spec_store_bypass_disable=off [X86,PPC]
|
||||
spectre_v2_user=off [X86]
|
||||
ssbd=force-off [ARM64]
|
||||
tsx_async_abort=off [X86]
|
||||
|
||||
Exceptions:
|
||||
This does not have any effect on
|
||||
|
|
|
|||
|
|
@ -56,31 +56,28 @@ information submitted to the security list and any followup discussions
|
|||
of the report are treated confidentially even after the embargo has been
|
||||
lifted, in perpetuity.
|
||||
|
||||
Coordination
|
||||
------------
|
||||
Coordination with other groups
|
||||
------------------------------
|
||||
|
||||
Fixes for sensitive bugs, such as those that might lead to privilege
|
||||
escalations, may need to be coordinated with the private
|
||||
<linux-distros@vs.openwall.org> mailing list so that distribution vendors
|
||||
are well prepared to issue a fixed kernel upon public disclosure of the
|
||||
upstream fix. Distros will need some time to test the proposed patch and
|
||||
will generally request at least a few days of embargo, and vendor update
|
||||
publication prefers to happen Tuesday through Thursday. When appropriate,
|
||||
the security team can assist with this coordination, or the reporter can
|
||||
include linux-distros from the start. In this case, remember to prefix
|
||||
the email Subject line with "[vs]" as described in the linux-distros wiki:
|
||||
<http://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists>
|
||||
The kernel security team strongly recommends that reporters of potential
|
||||
security issues NEVER contact the "linux-distros" mailing list until
|
||||
AFTER discussing it with the kernel security team. Do not Cc: both
|
||||
lists at once. You may contact the linux-distros mailing list after a
|
||||
fix has been agreed on and you fully understand the requirements that
|
||||
doing so will impose on you and the kernel community.
|
||||
|
||||
The different lists have different goals and the linux-distros rules do
|
||||
not contribute to actually fixing any potential security problems.
|
||||
|
||||
CVE assignment
|
||||
--------------
|
||||
|
||||
The security team does not normally assign CVEs, nor do we require them
|
||||
for reports or fixes, as this can needlessly complicate the process and
|
||||
may delay the bug handling. If a reporter wishes to have a CVE identifier
|
||||
assigned ahead of public disclosure, they will need to contact the private
|
||||
linux-distros list, described above. When such a CVE identifier is known
|
||||
before a patch is provided, it is desirable to mention it in the commit
|
||||
message if the reporter agrees.
|
||||
The security team does not assign CVEs, nor do we require them for
|
||||
reports or fixes, as this can needlessly complicate the process and may
|
||||
delay the bug handling. If a reporter wishes to have a CVE identifier
|
||||
assigned, they should find one by themselves, for example by contacting
|
||||
MITRE directly. However under no circumstances will a patch inclusion
|
||||
be delayed to wait for a CVE identifier to arrive.
|
||||
|
||||
Non-disclosure agreements
|
||||
-------------------------
|
||||
|
|
|
|||
|
|
@ -34,13 +34,14 @@ Table : Subdirectories in /proc/sys/net
|
|||
========= =================== = ========== ==================
|
||||
Directory Content Directory Content
|
||||
========= =================== = ========== ==================
|
||||
core General parameter appletalk Appletalk protocol
|
||||
unix Unix domain sockets netrom NET/ROM
|
||||
802 E802 protocol ax25 AX25
|
||||
ethernet Ethernet protocol rose X.25 PLP layer
|
||||
ipv4 IP version 4 x25 X.25 protocol
|
||||
bridge Bridging decnet DEC net
|
||||
ipv6 IP version 6 tipc TIPC
|
||||
802 E802 protocol mptcp Multipath TCP
|
||||
appletalk Appletalk protocol netfilter Network Filter
|
||||
ax25 AX25 netrom NET/ROM
|
||||
bridge Bridging rose X.25 PLP layer
|
||||
core General parameter tipc TIPC
|
||||
ethernet Ethernet protocol unix Unix domain sockets
|
||||
ipv4 IP version 4 x25 X.25 protocol
|
||||
ipv6 IP version 6
|
||||
========= =================== = ========== ==================
|
||||
|
||||
1. /proc/sys/net/core - Network core options
|
||||
|
|
|
|||
|
|
@ -22,12 +22,11 @@ exclusive.
|
|||
3) object removal. Locking rules: caller locks parent, finds victim,
|
||||
locks victim and calls the method. Locks are exclusive.
|
||||
|
||||
4) rename() that is _not_ cross-directory. Locking rules: caller locks
|
||||
the parent and finds source and target. In case of exchange (with
|
||||
RENAME_EXCHANGE in flags argument) lock both. In any case,
|
||||
if the target already exists, lock it. If the source is a non-directory,
|
||||
lock it. If we need to lock both, lock them in inode pointer order.
|
||||
Then call the method. All locks are exclusive.
|
||||
4) rename() that is _not_ cross-directory. Locking rules: caller locks the
|
||||
parent and finds source and target. We lock both (provided they exist). If we
|
||||
need to lock two inodes of different type (dir vs non-dir), we lock directory
|
||||
first. If we need to lock two inodes of the same type, lock them in inode
|
||||
pointer order. Then call the method. All locks are exclusive.
|
||||
NB: we might get away with locking the the source (and target in exchange
|
||||
case) shared.
|
||||
|
||||
|
|
@ -44,15 +43,17 @@ All locks are exclusive.
|
|||
rules:
|
||||
|
||||
* lock the filesystem
|
||||
* lock parents in "ancestors first" order.
|
||||
* lock parents in "ancestors first" order. If one is not ancestor of
|
||||
the other, lock them in inode pointer order.
|
||||
* find source and target.
|
||||
* if old parent is equal to or is a descendent of target
|
||||
fail with -ENOTEMPTY
|
||||
* if new parent is equal to or is a descendent of source
|
||||
fail with -ELOOP
|
||||
* If it's an exchange, lock both the source and the target.
|
||||
* If the target exists, lock it. If the source is a non-directory,
|
||||
lock it. If we need to lock both, do so in inode pointer order.
|
||||
* Lock both the source and the target provided they exist. If we
|
||||
need to lock two inodes of different type (dir vs non-dir), we lock
|
||||
the directory first. If we need to lock two inodes of the same type,
|
||||
lock them in inode pointer order.
|
||||
* call the method.
|
||||
|
||||
All ->i_rwsem are taken exclusive. Again, we might get away with locking
|
||||
|
|
@ -66,8 +67,9 @@ If no directory is its own ancestor, the scheme above is deadlock-free.
|
|||
|
||||
Proof:
|
||||
|
||||
First of all, at any moment we have a partial ordering of the
|
||||
objects - A < B iff A is an ancestor of B.
|
||||
First of all, at any moment we have a linear ordering of the
|
||||
objects - A < B iff (A is an ancestor of B) or (B is not an ancestor
|
||||
of A and ptr(A) < ptr(B)).
|
||||
|
||||
That ordering can change. However, the following is true:
|
||||
|
||||
|
|
|
|||
|
|
@ -302,7 +302,6 @@ Code Seq# Include File Comments
|
|||
0x89 00-06 arch/x86/include/asm/sockios.h
|
||||
0x89 0B-DF linux/sockios.h
|
||||
0x89 E0-EF linux/sockios.h SIOCPROTOPRIVATE range
|
||||
0x89 E0-EF linux/dn.h PROTOPRIVATE range
|
||||
0x89 F0-FF linux/sockios.h SIOCDEVPRIVATE range
|
||||
0x8B all linux/wireless.h
|
||||
0x8C 00-3F WiNRADiO driver
|
||||
|
|
|
|||
|
|
@ -7794,3 +7794,30 @@ formats.
|
|||
- 0x5001
|
||||
- Interleaved raw UYVY and JPEG image format with embedded meta-data
|
||||
used by Samsung S3C73MX camera sensors.
|
||||
|
||||
.. _v4l2-mbus-metadata-fmts:
|
||||
|
||||
Metadata Formats
|
||||
^^^^^^^^^^^^^^^^
|
||||
|
||||
This section lists all metadata formats.
|
||||
|
||||
The following table lists the existing metadata formats.
|
||||
|
||||
.. tabularcolumns:: |p{8.0cm}|p{1.4cm}|p{7.7cm}|
|
||||
|
||||
.. flat-table:: Metadata formats
|
||||
:header-rows: 1
|
||||
:stub-columns: 0
|
||||
|
||||
* - Identifier
|
||||
- Code
|
||||
- Comments
|
||||
* .. _MEDIA-BUS-FMT-METADATA-FIXED:
|
||||
|
||||
- MEDIA_BUS_FMT_METADATA_FIXED
|
||||
- 0x7001
|
||||
- This format should be used when the same driver handles
|
||||
both sides of the link and the bus format is a fixed
|
||||
metadata format that is not configurable from userspace.
|
||||
Width and height will be set to 0 for this format.
|
||||
|
|
|
|||
|
|
@ -40,13 +40,13 @@ allocates memory for this UMEM using whatever means it feels is most
|
|||
appropriate (malloc, mmap, huge pages, etc). This memory area is then
|
||||
registered with the kernel using the new setsockopt XDP_UMEM_REG. The
|
||||
UMEM also has two rings: the FILL ring and the COMPLETION ring. The
|
||||
fill ring is used by the application to send down addr for the kernel
|
||||
FILL ring is used by the application to send down addr for the kernel
|
||||
to fill in with RX packet data. References to these frames will then
|
||||
appear in the RX ring once each packet has been received. The
|
||||
completion ring, on the other hand, contains frame addr that the
|
||||
COMPLETION ring, on the other hand, contains frame addr that the
|
||||
kernel has transmitted completely and can now be used again by user
|
||||
space, for either TX or RX. Thus, the frame addrs appearing in the
|
||||
completion ring are addrs that were previously transmitted using the
|
||||
COMPLETION ring are addrs that were previously transmitted using the
|
||||
TX ring. In summary, the RX and FILL rings are used for the RX path
|
||||
and the TX and COMPLETION rings are used for the TX path.
|
||||
|
||||
|
|
@ -91,11 +91,16 @@ Concepts
|
|||
========
|
||||
|
||||
In order to use an AF_XDP socket, a number of associated objects need
|
||||
to be setup.
|
||||
to be setup. These objects and their options are explained in the
|
||||
following sections.
|
||||
|
||||
Jonathan Corbet has also written an excellent article on LWN,
|
||||
"Accelerating networking with AF_XDP". It can be found at
|
||||
https://lwn.net/Articles/750845/.
|
||||
For an overview on how AF_XDP works, you can also take a look at the
|
||||
Linux Plumbers paper from 2018 on the subject:
|
||||
http://vger.kernel.org/lpc_net2018_talks/lpc18_paper_af_xdp_perf-v2.pdf. Do
|
||||
NOT consult the paper from 2017 on "AF_PACKET v4", the first attempt
|
||||
at AF_XDP. Nearly everything changed since then. Jonathan Corbet has
|
||||
also written an excellent article on LWN, "Accelerating networking
|
||||
with AF_XDP". It can be found at https://lwn.net/Articles/750845/.
|
||||
|
||||
UMEM
|
||||
----
|
||||
|
|
@ -113,22 +118,22 @@ the next socket B can do this by setting the XDP_SHARED_UMEM flag in
|
|||
struct sockaddr_xdp member sxdp_flags, and passing the file descriptor
|
||||
of A to struct sockaddr_xdp member sxdp_shared_umem_fd.
|
||||
|
||||
The UMEM has two single-producer/single-consumer rings, that are used
|
||||
The UMEM has two single-producer/single-consumer rings that are used
|
||||
to transfer ownership of UMEM frames between the kernel and the
|
||||
user-space application.
|
||||
|
||||
Rings
|
||||
-----
|
||||
|
||||
There are a four different kind of rings: Fill, Completion, RX and
|
||||
There are a four different kind of rings: FILL, COMPLETION, RX and
|
||||
TX. All rings are single-producer/single-consumer, so the user-space
|
||||
application need explicit synchronization of multiple
|
||||
processes/threads are reading/writing to them.
|
||||
|
||||
The UMEM uses two rings: Fill and Completion. Each socket associated
|
||||
The UMEM uses two rings: FILL and COMPLETION. Each socket associated
|
||||
with the UMEM must have an RX queue, TX queue or both. Say, that there
|
||||
is a setup with four sockets (all doing TX and RX). Then there will be
|
||||
one Fill ring, one Completion ring, four TX rings and four RX rings.
|
||||
one FILL ring, one COMPLETION ring, four TX rings and four RX rings.
|
||||
|
||||
The rings are head(producer)/tail(consumer) based rings. A producer
|
||||
writes the data ring at the index pointed out by struct xdp_ring
|
||||
|
|
@ -146,7 +151,7 @@ The size of the rings need to be of size power of two.
|
|||
UMEM Fill Ring
|
||||
~~~~~~~~~~~~~~
|
||||
|
||||
The Fill ring is used to transfer ownership of UMEM frames from
|
||||
The FILL ring is used to transfer ownership of UMEM frames from
|
||||
user-space to kernel-space. The UMEM addrs are passed in the ring. As
|
||||
an example, if the UMEM is 64k and each chunk is 4k, then the UMEM has
|
||||
16 chunks and can pass addrs between 0 and 64k.
|
||||
|
|
@ -164,8 +169,8 @@ chunks mode, then the incoming addr will be left untouched.
|
|||
UMEM Completion Ring
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The Completion Ring is used transfer ownership of UMEM frames from
|
||||
kernel-space to user-space. Just like the Fill ring, UMEM indicies are
|
||||
The COMPLETION Ring is used transfer ownership of UMEM frames from
|
||||
kernel-space to user-space. Just like the FILL ring, UMEM indices are
|
||||
used.
|
||||
|
||||
Frames passed from the kernel to user-space are frames that has been
|
||||
|
|
@ -181,7 +186,7 @@ The RX ring is the receiving side of a socket. Each entry in the ring
|
|||
is a struct xdp_desc descriptor. The descriptor contains UMEM offset
|
||||
(addr) and the length of the data (len).
|
||||
|
||||
If no frames have been passed to kernel via the Fill ring, no
|
||||
If no frames have been passed to kernel via the FILL ring, no
|
||||
descriptors will (or can) appear on the RX ring.
|
||||
|
||||
The user application consumes struct xdp_desc descriptors from this
|
||||
|
|
@ -199,8 +204,24 @@ be relaxed in the future.
|
|||
The user application produces struct xdp_desc descriptors to this
|
||||
ring.
|
||||
|
||||
Libbpf
|
||||
======
|
||||
|
||||
Libbpf is a helper library for eBPF and XDP that makes using these
|
||||
technologies a lot simpler. It also contains specific helper functions
|
||||
in tools/lib/bpf/xsk.h for facilitating the use of AF_XDP. It
|
||||
contains two types of functions: those that can be used to make the
|
||||
setup of AF_XDP socket easier and ones that can be used in the data
|
||||
plane to access the rings safely and quickly. To see an example on how
|
||||
to use this API, please take a look at the sample application in
|
||||
samples/bpf/xdpsock_usr.c which uses libbpf for both setup and data
|
||||
plane operations.
|
||||
|
||||
We recommend that you use this library unless you have become a power
|
||||
user. It will make your program a lot simpler.
|
||||
|
||||
XSKMAP / BPF_MAP_TYPE_XSKMAP
|
||||
----------------------------
|
||||
============================
|
||||
|
||||
On XDP side there is a BPF map type BPF_MAP_TYPE_XSKMAP (XSKMAP) that
|
||||
is used in conjunction with bpf_redirect_map() to pass the ingress
|
||||
|
|
@ -216,21 +237,193 @@ queue 17. Only the XDP program executing for eth0 and queue 17 will
|
|||
successfully pass data to the socket. Please refer to the sample
|
||||
application (samples/bpf/) in for an example.
|
||||
|
||||
Configuration Flags and Socket Options
|
||||
======================================
|
||||
|
||||
These are the various configuration flags that can be used to control
|
||||
and monitor the behavior of AF_XDP sockets.
|
||||
|
||||
XDP_COPY and XDP_ZERO_COPY bind flags
|
||||
-------------------------------------
|
||||
|
||||
When you bind to a socket, the kernel will first try to use zero-copy
|
||||
copy. If zero-copy is not supported, it will fall back on using copy
|
||||
mode, i.e. copying all packets out to user space. But if you would
|
||||
like to force a certain mode, you can use the following flags. If you
|
||||
pass the XDP_COPY flag to the bind call, the kernel will force the
|
||||
socket into copy mode. If it cannot use copy mode, the bind call will
|
||||
fail with an error. Conversely, the XDP_ZERO_COPY flag will force the
|
||||
socket into zero-copy mode or fail.
|
||||
|
||||
XDP_SHARED_UMEM bind flag
|
||||
-------------------------
|
||||
|
||||
This flag enables you to bind multiple sockets to the same UMEM, but
|
||||
only if they share the same queue id. In this mode, each socket has
|
||||
their own RX and TX rings, but the UMEM (tied to the fist socket
|
||||
created) only has a single FILL ring and a single COMPLETION
|
||||
ring. To use this mode, create the first socket and bind it in the normal
|
||||
way. Create a second socket and create an RX and a TX ring, or at
|
||||
least one of them, but no FILL or COMPLETION rings as the ones from
|
||||
the first socket will be used. In the bind call, set he
|
||||
XDP_SHARED_UMEM option and provide the initial socket's fd in the
|
||||
sxdp_shared_umem_fd field. You can attach an arbitrary number of extra
|
||||
sockets this way.
|
||||
|
||||
What socket will then a packet arrive on? This is decided by the XDP
|
||||
program. Put all the sockets in the XSK_MAP and just indicate which
|
||||
index in the array you would like to send each packet to. A simple
|
||||
round-robin example of distributing packets is shown below:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
#include <linux/bpf.h>
|
||||
#include "bpf_helpers.h"
|
||||
|
||||
#define MAX_SOCKS 16
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_XSKMAP);
|
||||
__uint(max_entries, MAX_SOCKS);
|
||||
__uint(key_size, sizeof(int));
|
||||
__uint(value_size, sizeof(int));
|
||||
} xsks_map SEC(".maps");
|
||||
|
||||
static unsigned int rr;
|
||||
|
||||
SEC("xdp_sock") int xdp_sock_prog(struct xdp_md *ctx)
|
||||
{
|
||||
rr = (rr + 1) & (MAX_SOCKS - 1);
|
||||
|
||||
return bpf_redirect_map(&xsks_map, rr, 0);
|
||||
}
|
||||
|
||||
Note, that since there is only a single set of FILL and COMPLETION
|
||||
rings, and they are single producer, single consumer rings, you need
|
||||
to make sure that multiple processes or threads do not use these rings
|
||||
concurrently. There are no synchronization primitives in the
|
||||
libbpf code that protects multiple users at this point in time.
|
||||
|
||||
XDP_USE_NEED_WAKEUP bind flag
|
||||
-----------------------------
|
||||
|
||||
This option adds support for a new flag called need_wakeup that is
|
||||
present in the FILL ring and the TX ring, the rings for which user
|
||||
space is a producer. When this option is set in the bind call, the
|
||||
need_wakeup flag will be set if the kernel needs to be explicitly
|
||||
woken up by a syscall to continue processing packets. If the flag is
|
||||
zero, no syscall is needed.
|
||||
|
||||
If the flag is set on the FILL ring, the application needs to call
|
||||
poll() to be able to continue to receive packets on the RX ring. This
|
||||
can happen, for example, when the kernel has detected that there are no
|
||||
more buffers on the FILL ring and no buffers left on the RX HW ring of
|
||||
the NIC. In this case, interrupts are turned off as the NIC cannot
|
||||
receive any packets (as there are no buffers to put them in), and the
|
||||
need_wakeup flag is set so that user space can put buffers on the
|
||||
FILL ring and then call poll() so that the kernel driver can put these
|
||||
buffers on the HW ring and start to receive packets.
|
||||
|
||||
If the flag is set for the TX ring, it means that the application
|
||||
needs to explicitly notify the kernel to send any packets put on the
|
||||
TX ring. This can be accomplished either by a poll() call, as in the
|
||||
RX path, or by calling sendto().
|
||||
|
||||
An example of how to use this flag can be found in
|
||||
samples/bpf/xdpsock_user.c. An example with the use of libbpf helpers
|
||||
would look like this for the TX path:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
if (xsk_ring_prod__needs_wakeup(&my_tx_ring))
|
||||
sendto(xsk_socket__fd(xsk_handle), NULL, 0, MSG_DONTWAIT, NULL, 0);
|
||||
|
||||
I.e., only use the syscall if the flag is set.
|
||||
|
||||
We recommend that you always enable this mode as it usually leads to
|
||||
better performance especially if you run the application and the
|
||||
driver on the same core, but also if you use different cores for the
|
||||
application and the kernel driver, as it reduces the number of
|
||||
syscalls needed for the TX path.
|
||||
|
||||
XDP_{RX|TX|UMEM_FILL|UMEM_COMPLETION}_RING setsockopts
|
||||
------------------------------------------------------
|
||||
|
||||
These setsockopts sets the number of descriptors that the RX, TX,
|
||||
FILL, and COMPLETION rings respectively should have. It is mandatory
|
||||
to set the size of at least one of the RX and TX rings. If you set
|
||||
both, you will be able to both receive and send traffic from your
|
||||
application, but if you only want to do one of them, you can save
|
||||
resources by only setting up one of them. Both the FILL ring and the
|
||||
COMPLETION ring are mandatory if you have a UMEM tied to your socket,
|
||||
which is the normal case. But if the XDP_SHARED_UMEM flag is used, any
|
||||
socket after the first one does not have a UMEM and should in that
|
||||
case not have any FILL or COMPLETION rings created.
|
||||
|
||||
XDP_UMEM_REG setsockopt
|
||||
-----------------------
|
||||
|
||||
This setsockopt registers a UMEM to a socket. This is the area that
|
||||
contain all the buffers that packet can recide in. The call takes a
|
||||
pointer to the beginning of this area and the size of it. Moreover, it
|
||||
also has parameter called chunk_size that is the size that the UMEM is
|
||||
divided into. It can only be 2K or 4K at the moment. If you have an
|
||||
UMEM area that is 128K and a chunk size of 2K, this means that you
|
||||
will be able to hold a maximum of 128K / 2K = 64 packets in your UMEM
|
||||
area and that your largest packet size can be 2K.
|
||||
|
||||
There is also an option to set the headroom of each single buffer in
|
||||
the UMEM. If you set this to N bytes, it means that the packet will
|
||||
start N bytes into the buffer leaving the first N bytes for the
|
||||
application to use. The final option is the flags field, but it will
|
||||
be dealt with in separate sections for each UMEM flag.
|
||||
|
||||
SO_BINDTODEVICE setsockopt
|
||||
--------------------------
|
||||
|
||||
This is a generic SOL_SOCKET option that can be used to tie AF_XDP
|
||||
socket to a particular network interface. It is useful when a socket
|
||||
is created by a privileged process and passed to a non-privileged one.
|
||||
Once the option is set, kernel will refuse attempts to bind that socket
|
||||
to a different interface. Updating the value requires CAP_NET_RAW.
|
||||
|
||||
XDP_STATISTICS getsockopt
|
||||
-------------------------
|
||||
|
||||
Gets drop statistics of a socket that can be useful for debug
|
||||
purposes. The supported statistics are shown below:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
struct xdp_statistics {
|
||||
__u64 rx_dropped; /* Dropped for reasons other than invalid desc */
|
||||
__u64 rx_invalid_descs; /* Dropped due to invalid descriptor */
|
||||
__u64 tx_invalid_descs; /* Dropped due to invalid descriptor */
|
||||
};
|
||||
|
||||
XDP_OPTIONS getsockopt
|
||||
----------------------
|
||||
|
||||
Gets options from an XDP socket. The only one supported so far is
|
||||
XDP_OPTIONS_ZEROCOPY which tells you if zero-copy is on or not.
|
||||
|
||||
Usage
|
||||
=====
|
||||
|
||||
In order to use AF_XDP sockets there are two parts needed. The
|
||||
In order to use AF_XDP sockets two parts are needed. The
|
||||
user-space application and the XDP program. For a complete setup and
|
||||
usage example, please refer to the sample application. The user-space
|
||||
side is xdpsock_user.c and the XDP side is part of libbpf.
|
||||
|
||||
The XDP code sample included in tools/lib/bpf/xsk.c is the following::
|
||||
The XDP code sample included in tools/lib/bpf/xsk.c is the following:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
SEC("xdp_sock") int xdp_sock_prog(struct xdp_md *ctx)
|
||||
{
|
||||
int index = ctx->rx_queue_index;
|
||||
|
||||
// A set entry here means that the correspnding queue_id
|
||||
// A set entry here means that the corresponding queue_id
|
||||
// has an active AF_XDP socket bound to it.
|
||||
if (bpf_map_lookup_elem(&xsks_map, &index))
|
||||
return bpf_redirect_map(&xsks_map, index, 0);
|
||||
|
|
@ -238,7 +431,10 @@ The XDP code sample included in tools/lib/bpf/xsk.c is the following::
|
|||
return XDP_PASS;
|
||||
}
|
||||
|
||||
Naive ring dequeue and enqueue could look like this::
|
||||
A simple but not so performance ring dequeue and enqueue could look
|
||||
like this:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
// struct xdp_rxtx_ring {
|
||||
// __u32 *producer;
|
||||
|
|
@ -287,17 +483,16 @@ Naive ring dequeue and enqueue could look like this::
|
|||
return 0;
|
||||
}
|
||||
|
||||
|
||||
For a more optimized version, please refer to the sample application.
|
||||
But please use the libbpf functions as they are optimized and ready to
|
||||
use. Will make your life easier.
|
||||
|
||||
Sample application
|
||||
==================
|
||||
|
||||
There is a xdpsock benchmarking/test application included that
|
||||
demonstrates how to use AF_XDP sockets with both private and shared
|
||||
UMEMs. Say that you would like your UDP traffic from port 4242 to end
|
||||
up in queue 16, that we will enable AF_XDP on. Here, we use ethtool
|
||||
for this::
|
||||
demonstrates how to use AF_XDP sockets with private UMEMs. Say that
|
||||
you would like your UDP traffic from port 4242 to end up in queue 16,
|
||||
that we will enable AF_XDP on. Here, we use ethtool for this::
|
||||
|
||||
ethtool -N p3p2 rx-flow-hash udp4 fn
|
||||
ethtool -N p3p2 flow-type udp4 src-port 4242 dst-port 4242 \
|
||||
|
|
@ -311,13 +506,18 @@ using::
|
|||
For XDP_SKB mode, use the switch "-S" instead of "-N" and all options
|
||||
can be displayed with "-h", as usual.
|
||||
|
||||
This sample application uses libbpf to make the setup and usage of
|
||||
AF_XDP simpler. If you want to know how the raw uapi of AF_XDP is
|
||||
really used to make something more advanced, take a look at the libbpf
|
||||
code in tools/lib/bpf/xsk.[ch].
|
||||
|
||||
FAQ
|
||||
=======
|
||||
|
||||
Q: I am not seeing any traffic on the socket. What am I doing wrong?
|
||||
|
||||
A: When a netdev of a physical NIC is initialized, Linux usually
|
||||
allocates one Rx and Tx queue pair per core. So on a 8 core system,
|
||||
allocates one RX and TX queue pair per core. So on a 8 core system,
|
||||
queue ids 0 to 7 will be allocated, one per core. In the AF_XDP
|
||||
bind call or the xsk_socket__create libbpf function call, you
|
||||
specify a specific queue id to bind to and it is only the traffic
|
||||
|
|
@ -343,9 +543,21 @@ A: When a netdev of a physical NIC is initialized, Linux usually
|
|||
sudo ethtool -N <interface> flow-type udp4 src-port 4242 dst-port \
|
||||
4242 action 2
|
||||
|
||||
A number of other ways are possible all up to the capabilitites of
|
||||
A number of other ways are possible all up to the capabilities of
|
||||
the NIC you have.
|
||||
|
||||
Q: Can I use the XSKMAP to implement a switch betwen different umems
|
||||
in copy mode?
|
||||
|
||||
A: The short answer is no, that is not supported at the moment. The
|
||||
XSKMAP can only be used to switch traffic coming in on queue id X
|
||||
to sockets bound to the same queue id X. The XSKMAP can contain
|
||||
sockets bound to different queue ids, for example X and Y, but only
|
||||
traffic goming in from queue id Y can be directed to sockets bound
|
||||
to the same queue id Y. In zero-copy mode, you should use the
|
||||
switch, or other distribution mechanism, in your NIC to direct
|
||||
traffic to the correct queue id and socket.
|
||||
|
||||
Credits
|
||||
=======
|
||||
|
||||
|
|
|
|||
|
|
@ -1,230 +0,0 @@
|
|||
Linux DECnet Networking Layer Information
|
||||
===========================================
|
||||
|
||||
1) Other documentation....
|
||||
|
||||
o Project Home Pages
|
||||
http://www.chygwyn.com/ - Kernel info
|
||||
http://linux-decnet.sourceforge.net/ - Userland tools
|
||||
http://www.sourceforge.net/projects/linux-decnet/ - Status page
|
||||
|
||||
2) Configuring the kernel
|
||||
|
||||
Be sure to turn on the following options:
|
||||
|
||||
CONFIG_DECNET (obviously)
|
||||
CONFIG_PROC_FS (to see what's going on)
|
||||
CONFIG_SYSCTL (for easy configuration)
|
||||
|
||||
if you want to try out router support (not properly debugged yet)
|
||||
you'll need the following options as well...
|
||||
|
||||
CONFIG_DECNET_ROUTER (to be able to add/delete routes)
|
||||
CONFIG_NETFILTER (will be required for the DECnet routing daemon)
|
||||
|
||||
Don't turn on SIOCGIFCONF support for DECnet unless you are really sure
|
||||
that you need it, in general you won't and it can cause ifconfig to
|
||||
malfunction.
|
||||
|
||||
Run time configuration has changed slightly from the 2.4 system. If you
|
||||
want to configure an endnode, then the simplified procedure is as follows:
|
||||
|
||||
o Set the MAC address on your ethernet card before starting _any_ other
|
||||
network protocols.
|
||||
|
||||
As soon as your network card is brought into the UP state, DECnet should
|
||||
start working. If you need something more complicated or are unsure how
|
||||
to set the MAC address, see the next section. Also all configurations which
|
||||
worked with 2.4 will work under 2.5 with no change.
|
||||
|
||||
3) Command line options
|
||||
|
||||
You can set a DECnet address on the kernel command line for compatibility
|
||||
with the 2.4 configuration procedure, but in general it's not needed any more.
|
||||
If you do st a DECnet address on the command line, it has only one purpose
|
||||
which is that its added to the addresses on the loopback device.
|
||||
|
||||
With 2.4 kernels, DECnet would only recognise addresses as local if they
|
||||
were added to the loopback device. In 2.5, any local interface address
|
||||
can be used to loop back to the local machine. Of course this does not
|
||||
prevent you adding further addresses to the loopback device if you
|
||||
want to.
|
||||
|
||||
N.B. Since the address list of an interface determines the addresses for
|
||||
which "hello" messages are sent, if you don't set an address on the loopback
|
||||
interface then you won't see any entries in /proc/net/neigh for the local
|
||||
host until such time as you start a connection. This doesn't affect the
|
||||
operation of the local communications in any other way though.
|
||||
|
||||
The kernel command line takes options looking like the following:
|
||||
|
||||
decnet.addr=1,2
|
||||
|
||||
the two numbers are the node address 1,2 = 1.2 For 2.2.xx kernels
|
||||
and early 2.3.xx kernels, you must use a comma when specifying the
|
||||
DECnet address like this. For more recent 2.3.xx kernels, you may
|
||||
use almost any character except space, although a `.` would be the most
|
||||
obvious choice :-)
|
||||
|
||||
There used to be a third number specifying the node type. This option
|
||||
has gone away in favour of a per interface node type. This is now set
|
||||
using /proc/sys/net/decnet/conf/<dev>/forwarding. This file can be
|
||||
set with a single digit, 0=EndNode, 1=L1 Router and 2=L2 Router.
|
||||
|
||||
There are also equivalent options for modules. The node address can
|
||||
also be set through the /proc/sys/net/decnet/ files, as can other system
|
||||
parameters.
|
||||
|
||||
Currently the only supported devices are ethernet and ip_gre. The
|
||||
ethernet address of your ethernet card has to be set according to the DECnet
|
||||
address of the node in order for it to be autoconfigured (and then appear in
|
||||
/proc/net/decnet_dev). There is a utility available at the above
|
||||
FTP sites called dn2ethaddr which can compute the correct ethernet
|
||||
address to use. The address can be set by ifconfig either before or
|
||||
at the time the device is brought up. If you are using RedHat you can
|
||||
add the line:
|
||||
|
||||
MACADDR=AA:00:04:00:03:04
|
||||
|
||||
or something similar, to /etc/sysconfig/network-scripts/ifcfg-eth0 or
|
||||
wherever your network card's configuration lives. Setting the MAC address
|
||||
of your ethernet card to an address starting with "hi-ord" will cause a
|
||||
DECnet address which matches to be added to the interface (which you can
|
||||
verify with iproute2).
|
||||
|
||||
The default device for routing can be set through the /proc filesystem
|
||||
by setting /proc/sys/net/decnet/default_device to the
|
||||
device you want DECnet to route packets out of when no specific route
|
||||
is available. Usually this will be eth0, for example:
|
||||
|
||||
echo -n "eth0" >/proc/sys/net/decnet/default_device
|
||||
|
||||
If you don't set the default device, then it will default to the first
|
||||
ethernet card which has been autoconfigured as described above. You can
|
||||
confirm that by looking in the default_device file of course.
|
||||
|
||||
There is a list of what the other files under /proc/sys/net/decnet/ do
|
||||
on the kernel patch web site (shown above).
|
||||
|
||||
4) Run time kernel configuration
|
||||
|
||||
This is either done through the sysctl/proc interface (see the kernel web
|
||||
pages for details on what the various options do) or through the iproute2
|
||||
package in the same way as IPv4/6 configuration is performed.
|
||||
|
||||
Documentation for iproute2 is included with the package, although there is
|
||||
as yet no specific section on DECnet, most of the features apply to both
|
||||
IP and DECnet, albeit with DECnet addresses instead of IP addresses and
|
||||
a reduced functionality.
|
||||
|
||||
If you want to configure a DECnet router you'll need the iproute2 package
|
||||
since its the _only_ way to add and delete routes currently. Eventually
|
||||
there will be a routing daemon to send and receive routing messages for
|
||||
each interface and update the kernel routing tables accordingly. The
|
||||
routing daemon will use netfilter to listen to routing packets, and
|
||||
rtnetlink to update the kernels routing tables.
|
||||
|
||||
The DECnet raw socket layer has been removed since it was there purely
|
||||
for use by the routing daemon which will now use netfilter (a much cleaner
|
||||
and more generic solution) instead.
|
||||
|
||||
5) How can I tell if its working ?
|
||||
|
||||
Here is a quick guide of what to look for in order to know if your DECnet
|
||||
kernel subsystem is working.
|
||||
|
||||
- Is the node address set (see /proc/sys/net/decnet/node_address)
|
||||
- Is the node of the correct type
|
||||
(see /proc/sys/net/decnet/conf/<dev>/forwarding)
|
||||
- Is the Ethernet MAC address of each Ethernet card set to match
|
||||
the DECnet address. If in doubt use the dn2ethaddr utility available
|
||||
at the ftp archive.
|
||||
- If the previous two steps are satisfied, and the Ethernet card is up,
|
||||
you should find that it is listed in /proc/net/decnet_dev and also
|
||||
that it appears as a directory in /proc/sys/net/decnet/conf/. The
|
||||
loopback device (lo) should also appear and is required to communicate
|
||||
within a node.
|
||||
- If you have any DECnet routers on your network, they should appear
|
||||
in /proc/net/decnet_neigh, otherwise this file will only contain the
|
||||
entry for the node itself (if it doesn't check to see if lo is up).
|
||||
- If you want to send to any node which is not listed in the
|
||||
/proc/net/decnet_neigh file, you'll need to set the default device
|
||||
to point to an Ethernet card with connection to a router. This is
|
||||
again done with the /proc/sys/net/decnet/default_device file.
|
||||
- Try starting a simple server and client, like the dnping/dnmirror
|
||||
over the loopback interface. With luck they should communicate.
|
||||
For this step and those after, you'll need the DECnet library
|
||||
which can be obtained from the above ftp sites as well as the
|
||||
actual utilities themselves.
|
||||
- If this seems to work, then try talking to a node on your local
|
||||
network, and see if you can obtain the same results.
|
||||
- At this point you are on your own... :-)
|
||||
|
||||
6) How to send a bug report
|
||||
|
||||
If you've found a bug and want to report it, then there are several things
|
||||
you can do to help me work out exactly what it is that is wrong. Useful
|
||||
information (_most_ of which _is_ _essential_) includes:
|
||||
|
||||
- What kernel version are you running ?
|
||||
- What version of the patch are you running ?
|
||||
- How far though the above set of tests can you get ?
|
||||
- What is in the /proc/decnet* files and /proc/sys/net/decnet/* files ?
|
||||
- Which services are you running ?
|
||||
- Which client caused the problem ?
|
||||
- How much data was being transferred ?
|
||||
- Was the network congested ?
|
||||
- How can the problem be reproduced ?
|
||||
- Can you use tcpdump to get a trace ? (N.B. Most (all?) versions of
|
||||
tcpdump don't understand how to dump DECnet properly, so including
|
||||
the hex listing of the packet contents is _essential_, usually the -x flag.
|
||||
You may also need to increase the length grabbed with the -s flag. The
|
||||
-e flag also provides very useful information (ethernet MAC addresses))
|
||||
|
||||
7) MAC FAQ
|
||||
|
||||
A quick FAQ on ethernet MAC addresses to explain how Linux and DECnet
|
||||
interact and how to get the best performance from your hardware.
|
||||
|
||||
Ethernet cards are designed to normally only pass received network frames
|
||||
to a host computer when they are addressed to it, or to the broadcast address.
|
||||
|
||||
Linux has an interface which allows the setting of extra addresses for
|
||||
an ethernet card to listen to. If the ethernet card supports it, the
|
||||
filtering operation will be done in hardware, if not the extra unwanted packets
|
||||
received will be discarded by the host computer. In the latter case,
|
||||
significant processor time and bus bandwidth can be used up on a busy
|
||||
network (see the NAPI documentation for a longer explanation of these
|
||||
effects).
|
||||
|
||||
DECnet makes use of this interface to allow running DECnet on an ethernet
|
||||
card which has already been configured using TCP/IP (presumably using the
|
||||
built in MAC address of the card, as usual) and/or to allow multiple DECnet
|
||||
addresses on each physical interface. If you do this, be aware that if your
|
||||
ethernet card doesn't support perfect hashing in its MAC address filter
|
||||
then your computer will be doing more work than required. Some cards
|
||||
will simply set themselves into promiscuous mode in order to receive
|
||||
packets from the DECnet specified addresses. So if you have one of these
|
||||
cards its better to set the MAC address of the card as described above
|
||||
to gain the best efficiency. Better still is to use a card which supports
|
||||
NAPI as well.
|
||||
|
||||
|
||||
8) Mailing list
|
||||
|
||||
If you are keen to get involved in development, or want to ask questions
|
||||
about configuration, or even just report bugs, then there is a mailing
|
||||
list that you can join, details are at:
|
||||
|
||||
http://sourceforge.net/mail/?group_id=4993
|
||||
|
||||
9) Legal Info
|
||||
|
||||
The Linux DECnet project team have placed their code under the GPL. The
|
||||
software is provided "as is" and without warranty express or implied.
|
||||
DECnet is a trademark of Compaq. This software is not a product of
|
||||
Compaq. We acknowledge the help of people at Compaq in providing extra
|
||||
documentation above and beyond what was previously publicly available.
|
||||
|
||||
Steve Whitehouse <SteveW@ACM.org>
|
||||
|
||||
|
|
@ -4617,13 +4617,6 @@ F: include/uapi/linux/dccp.h
|
|||
F: include/linux/tfrc.h
|
||||
F: net/dccp/
|
||||
|
||||
DECnet NETWORK LAYER
|
||||
W: http://linux-decnet.sourceforge.net
|
||||
L: linux-decnet-user@lists.sourceforge.net
|
||||
S: Orphan
|
||||
F: Documentation/networking/decnet.txt
|
||||
F: net/decnet/
|
||||
|
||||
DECSTATION PLATFORM SUPPORT
|
||||
M: "Maciej W. Rozycki" <macro@linux-mips.org>
|
||||
L: linux-mips@vger.kernel.org
|
||||
|
|
|
|||
6
Makefile
6
Makefile
|
|
@ -1,7 +1,7 @@
|
|||
# SPDX-License-Identifier: GPL-2.0
|
||||
VERSION = 5
|
||||
PATCHLEVEL = 4
|
||||
SUBLEVEL = 242
|
||||
SUBLEVEL = 254
|
||||
EXTRAVERSION =
|
||||
NAME = Kleptomaniac Octopus
|
||||
|
||||
|
|
@ -813,6 +813,10 @@ endif
|
|||
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
|
||||
|
||||
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
|
||||
|
||||
# These result in bogus false positives
|
||||
KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer)
|
||||
|
||||
ifdef CONFIG_FRAME_POINTER
|
||||
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
|
||||
else
|
||||
|
|
|
|||
|
|
@ -1 +1 @@
|
|||
LTS_5.4.242_e699d543bbc9
|
||||
LTS_5.4.254_91f702572a80
|
||||
|
|
|
|||
168671
android/abi_gki_aarch64.xml
168671
android/abi_gki_aarch64.xml
File diff suppressed because it is too large
Load diff
File diff suppressed because it is too large
Load diff
|
|
@ -2443,6 +2443,7 @@
|
|||
sysfs_create_group
|
||||
sysfs_create_groups
|
||||
sysfs_create_link
|
||||
sysfs_emit
|
||||
__sysfs_match_string
|
||||
sysfs_notify
|
||||
sysfs_remove_bin_file
|
||||
|
|
@ -2563,6 +2564,7 @@
|
|||
ufshcd_uic_hibern8_exit
|
||||
uhid_hid_driver
|
||||
__uio_register_device
|
||||
uhid_hid_driver
|
||||
uio_unregister_device
|
||||
unlock_new_inode
|
||||
unlock_page
|
||||
|
|
|
|||
|
|
@ -271,6 +271,9 @@ config ARCH_HAS_UNCACHED_SEGMENT
|
|||
select ARCH_HAS_DMA_PREP_COHERENT
|
||||
bool
|
||||
|
||||
config ARCH_HAS_CPU_FINALIZE_INIT
|
||||
bool
|
||||
|
||||
# Select if arch init_task must go in the __init_task_data section
|
||||
config ARCH_TASK_STRUCT_ON_STACK
|
||||
bool
|
||||
|
|
|
|||
|
|
@ -1,20 +0,0 @@
|
|||
/*
|
||||
* include/asm-alpha/bugs.h
|
||||
*
|
||||
* Copyright (C) 1994 Linus Torvalds
|
||||
*/
|
||||
|
||||
/*
|
||||
* This is included by init/main.c to check for architecture-dependent bugs.
|
||||
*
|
||||
* Needs:
|
||||
* void check_bugs(void);
|
||||
*/
|
||||
|
||||
/*
|
||||
* I don't know of any alpha bugs yet.. Nice chip
|
||||
*/
|
||||
|
||||
static void check_bugs(void)
|
||||
{
|
||||
}
|
||||
|
|
@ -394,8 +394,7 @@ setup_memory(void *kernel_end)
|
|||
extern void setup_memory(void *);
|
||||
#endif /* !CONFIG_DISCONTIGMEM */
|
||||
|
||||
int __init
|
||||
page_is_ram(unsigned long pfn)
|
||||
int page_is_ram(unsigned long pfn)
|
||||
{
|
||||
struct memclust_struct * cluster;
|
||||
struct memdesc_struct * memdesc;
|
||||
|
|
|
|||
|
|
@ -8,6 +8,10 @@
|
|||
|
||||
#include <asm/dwarf.h>
|
||||
|
||||
#define ASM_NL ` /* use '`' to mark new line in macro */
|
||||
#define __ALIGN .align 4
|
||||
#define __ALIGN_STR __stringify(__ALIGN)
|
||||
|
||||
#ifdef __ASSEMBLY__
|
||||
|
||||
.macro ST2 e, o, off
|
||||
|
|
@ -28,10 +32,6 @@
|
|||
#endif
|
||||
.endm
|
||||
|
||||
#define ASM_NL ` /* use '`' to mark new line in macro */
|
||||
#define __ALIGN .align 4
|
||||
#define __ALIGN_STR __stringify(__ALIGN)
|
||||
|
||||
/* annotation for data we want in DCCM - if enabled in .config */
|
||||
.macro ARCFP_DATA nm
|
||||
#ifdef CONFIG_ARC_HAS_DCCM
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@ config ARM
|
|||
select ARCH_32BIT_OFF_T
|
||||
select ARCH_CLOCKSOURCE_DATA
|
||||
select ARCH_HAS_BINFMT_FLAT
|
||||
select ARCH_HAS_CPU_FINALIZE_INIT if MMU
|
||||
select ARCH_HAS_DEBUG_VIRTUAL if MMU
|
||||
select ARCH_HAS_DEVMEM_IS_ALLOWED
|
||||
select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
|
||||
|
|
|
|||
|
|
@ -527,7 +527,7 @@
|
|||
|
||||
interrupt-parent = <&gpio1>;
|
||||
interrupts = <31 0>;
|
||||
pendown-gpio = <&gpio1 31 0>;
|
||||
pendown-gpio = <&gpio1 31 GPIO_ACTIVE_LOW>;
|
||||
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
|
|
|
|||
|
|
@ -156,7 +156,7 @@
|
|||
compatible = "ti,ads7843";
|
||||
interrupts-extended = <&pioC 2 IRQ_TYPE_EDGE_BOTH>;
|
||||
spi-max-frequency = <3000000>;
|
||||
pendown-gpio = <&pioC 2 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&pioC 2 GPIO_ACTIVE_LOW>;
|
||||
|
||||
ti,x-min = /bits/ 16 <150>;
|
||||
ti,x-max = /bits/ 16 <3830>;
|
||||
|
|
|
|||
|
|
@ -511,7 +511,6 @@
|
|||
"spi_lr_session_done",
|
||||
"spi_lr_overread";
|
||||
clocks = <&iprocmed>;
|
||||
clock-names = "iprocmed";
|
||||
num-cs = <2>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
|
|
|||
|
|
@ -179,7 +179,7 @@
|
|||
compatible = "wlf,wm8960";
|
||||
reg = <0x1a>;
|
||||
clocks = <&pmu_system_controller 0>;
|
||||
clock-names = "MCLK1";
|
||||
clock-names = "mclk";
|
||||
wlf,shared-lrclk;
|
||||
#sound-dai-cells = <0>;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -59,7 +59,7 @@
|
|||
interrupt-parent = <&avic>;
|
||||
ranges;
|
||||
|
||||
L2: l2-cache@30000000 {
|
||||
L2: cache-controller@30000000 {
|
||||
compatible = "arm,l210-cache";
|
||||
reg = <0x30000000 0x1000>;
|
||||
cache-unified;
|
||||
|
|
|
|||
|
|
@ -45,6 +45,10 @@
|
|||
spi1 = &ecspi2;
|
||||
spi2 = &ecspi3;
|
||||
spi3 = &ecspi4;
|
||||
usb0 = &usbotg;
|
||||
usb1 = &usbh1;
|
||||
usb2 = &usbh2;
|
||||
usb3 = &usbh3;
|
||||
usbphy0 = &usbphy1;
|
||||
usbphy1 = &usbphy2;
|
||||
};
|
||||
|
|
@ -255,7 +259,7 @@
|
|||
interrupt-parent = <&intc>;
|
||||
};
|
||||
|
||||
L2: l2-cache@a02000 {
|
||||
L2: cache-controller@a02000 {
|
||||
compatible = "arm,pl310-cache";
|
||||
reg = <0x00a02000 0x1000>;
|
||||
interrupts = <0 92 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
|
|||
|
|
@ -39,6 +39,9 @@
|
|||
spi1 = &ecspi2;
|
||||
spi2 = &ecspi3;
|
||||
spi3 = &ecspi4;
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbotg2;
|
||||
usb2 = &usbh;
|
||||
usbphy0 = &usbphy1;
|
||||
usbphy1 = &usbphy2;
|
||||
};
|
||||
|
|
@ -136,7 +139,7 @@
|
|||
interrupt-parent = <&intc>;
|
||||
};
|
||||
|
||||
L2: l2-cache@a02000 {
|
||||
L2: cache-controller@a02000 {
|
||||
compatible = "arm,pl310-cache";
|
||||
reg = <0x00a02000 0x1000>;
|
||||
interrupts = <0 92 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
|
|||
|
|
@ -36,6 +36,8 @@
|
|||
spi1 = &ecspi2;
|
||||
spi3 = &ecspi3;
|
||||
spi4 = &ecspi4;
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbotg2;
|
||||
usbphy0 = &usbphy1;
|
||||
usbphy1 = &usbphy2;
|
||||
};
|
||||
|
|
@ -49,20 +51,18 @@
|
|||
device_type = "cpu";
|
||||
reg = <0>;
|
||||
next-level-cache = <&L2>;
|
||||
operating-points = <
|
||||
operating-points =
|
||||
/* kHz uV */
|
||||
996000 1275000
|
||||
792000 1175000
|
||||
396000 1075000
|
||||
198000 975000
|
||||
>;
|
||||
fsl,soc-operating-points = <
|
||||
<996000 1275000>,
|
||||
<792000 1175000>,
|
||||
<396000 1075000>,
|
||||
<198000 975000>;
|
||||
fsl,soc-operating-points =
|
||||
/* ARM kHz SOC-PU uV */
|
||||
996000 1175000
|
||||
792000 1175000
|
||||
396000 1175000
|
||||
198000 1175000
|
||||
>;
|
||||
<996000 1175000>,
|
||||
<792000 1175000>,
|
||||
<396000 1175000>,
|
||||
<198000 1175000>;
|
||||
clock-latency = <61036>; /* two CLK32 periods */
|
||||
#cooling-cells = <2>;
|
||||
clocks = <&clks IMX6SLL_CLK_ARM>,
|
||||
|
|
@ -137,7 +137,7 @@
|
|||
interrupt-parent = <&intc>;
|
||||
};
|
||||
|
||||
L2: l2-cache@a02000 {
|
||||
L2: cache-controller@a02000 {
|
||||
compatible = "arm,pl310-cache";
|
||||
reg = <0x00a02000 0x1000>;
|
||||
interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
@ -272,7 +272,7 @@
|
|||
status = "disabled";
|
||||
};
|
||||
|
||||
ssi1: ssi-controller@2028000 {
|
||||
ssi1: ssi@2028000 {
|
||||
compatible = "fsl,imx6sl-ssi", "fsl,imx51-ssi";
|
||||
reg = <0x02028000 0x4000>;
|
||||
interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
@ -285,7 +285,7 @@
|
|||
status = "disabled";
|
||||
};
|
||||
|
||||
ssi2: ssi-controller@202c000 {
|
||||
ssi2: ssi@202c000 {
|
||||
compatible = "fsl,imx6sl-ssi", "fsl,imx51-ssi";
|
||||
reg = <0x0202c000 0x4000>;
|
||||
interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
@ -298,7 +298,7 @@
|
|||
status = "disabled";
|
||||
};
|
||||
|
||||
ssi3: ssi-controller@2030000 {
|
||||
ssi3: ssi@2030000 {
|
||||
compatible = "fsl,imx6sl-ssi", "fsl,imx51-ssi";
|
||||
reg = <0x02030000 0x4000>;
|
||||
interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
@ -550,7 +550,7 @@
|
|||
reg = <0x020ca000 0x1000>;
|
||||
interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
|
||||
clocks = <&clks IMX6SLL_CLK_USBPHY2>;
|
||||
phy-reg_3p0-supply = <®_3p0>;
|
||||
phy-3p0-supply = <®_3p0>;
|
||||
fsl,anatop = <&anatop>;
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -49,6 +49,9 @@
|
|||
spi2 = &ecspi3;
|
||||
spi3 = &ecspi4;
|
||||
spi4 = &ecspi5;
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbotg2;
|
||||
usb2 = &usbh;
|
||||
usbphy0 = &usbphy1;
|
||||
usbphy1 = &usbphy2;
|
||||
};
|
||||
|
|
@ -187,7 +190,7 @@
|
|||
interrupt-parent = <&intc>;
|
||||
};
|
||||
|
||||
L2: l2-cache@a02000 {
|
||||
L2: cache-controller@a02000 {
|
||||
compatible = "arm,pl310-cache";
|
||||
reg = <0x00a02000 0x1000>;
|
||||
interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
|
||||
|
|
|
|||
|
|
@ -47,6 +47,8 @@
|
|||
spi1 = &ecspi2;
|
||||
spi2 = &ecspi3;
|
||||
spi3 = &ecspi4;
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbotg2;
|
||||
usbphy0 = &usbphy1;
|
||||
usbphy1 = &usbphy2;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -64,7 +64,7 @@
|
|||
interrupt-parent = <&gpio2>;
|
||||
interrupts = <7 0>;
|
||||
spi-max-frequency = <1000000>;
|
||||
pendown-gpio = <&gpio2 7 0>;
|
||||
pendown-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>;
|
||||
vcc-supply = <®_3p3v>;
|
||||
ti,x-min = /bits/ 16 <0>;
|
||||
ti,x-max = /bits/ 16 <4095>;
|
||||
|
|
|
|||
|
|
@ -176,7 +176,7 @@
|
|||
pinctrl-0 = <&pinctrl_tsc2046_pendown>;
|
||||
interrupt-parent = <&gpio2>;
|
||||
interrupts = <29 0>;
|
||||
pendown-gpio = <&gpio2 29 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio2 29 GPIO_ACTIVE_LOW>;
|
||||
touchscreen-max-pressure = <255>;
|
||||
wakeup-source;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -7,6 +7,12 @@
|
|||
#include <dt-bindings/reset/imx7-reset.h>
|
||||
|
||||
/ {
|
||||
aliases {
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbotg2;
|
||||
usb2 = &usbh;
|
||||
};
|
||||
|
||||
cpus {
|
||||
cpu0: cpu@0 {
|
||||
clock-frequency = <996000000>;
|
||||
|
|
|
|||
|
|
@ -47,6 +47,8 @@
|
|||
spi1 = &ecspi2;
|
||||
spi2 = &ecspi3;
|
||||
spi3 = &ecspi4;
|
||||
usb0 = &usbotg1;
|
||||
usb1 = &usbh;
|
||||
};
|
||||
|
||||
cpus {
|
||||
|
|
|
|||
|
|
@ -227,7 +227,7 @@
|
|||
|
||||
interrupt-parent = <&gpio2>;
|
||||
interrupts = <25 0>; /* gpio_57 */
|
||||
pendown-gpio = <&gpio2 25 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio2 25 GPIO_ACTIVE_LOW>;
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
ti,x-max = /bits/ 16 <0x0fff>;
|
||||
|
|
|
|||
|
|
@ -54,7 +54,7 @@
|
|||
|
||||
interrupt-parent = <&gpio1>;
|
||||
interrupts = <27 0>; /* gpio_27 */
|
||||
pendown-gpio = <&gpio1 27 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio1 27 GPIO_ACTIVE_LOW>;
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
ti,x-max = /bits/ 16 <0x0fff>;
|
||||
|
|
|
|||
|
|
@ -5,9 +5,11 @@
|
|||
|
||||
#include "omap3-gta04a5.dts"
|
||||
|
||||
&omap3_pmx_core {
|
||||
/ {
|
||||
model = "Goldelico GTA04A5/Letux 2804 with OneNAND";
|
||||
};
|
||||
|
||||
&omap3_pmx_core {
|
||||
gpmc_pins: pinmux_gpmc_pins {
|
||||
pinctrl-single,pins = <
|
||||
|
||||
|
|
|
|||
|
|
@ -311,7 +311,7 @@
|
|||
interrupt-parent = <&gpio1>;
|
||||
interrupts = <8 0>; /* boot6 / gpio_8 */
|
||||
spi-max-frequency = <1000000>;
|
||||
pendown-gpio = <&gpio1 8 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio1 8 GPIO_ACTIVE_LOW>;
|
||||
vcc-supply = <®_vcc3>;
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&tsc2048_pins>;
|
||||
|
|
|
|||
|
|
@ -149,7 +149,7 @@
|
|||
|
||||
interrupt-parent = <&gpio4>;
|
||||
interrupts = <18 0>; /* gpio_114 */
|
||||
pendown-gpio = <&gpio4 18 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio4 18 GPIO_ACTIVE_LOW>;
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
ti,x-max = /bits/ 16 <0x0fff>;
|
||||
|
|
|
|||
|
|
@ -160,7 +160,7 @@
|
|||
|
||||
interrupt-parent = <&gpio4>;
|
||||
interrupts = <18 0>; /* gpio_114 */
|
||||
pendown-gpio = <&gpio4 18 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio4 18 GPIO_ACTIVE_LOW>;
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
ti,x-max = /bits/ 16 <0x0fff>;
|
||||
|
|
|
|||
|
|
@ -651,7 +651,7 @@
|
|||
pinctrl-0 = <&penirq_pins>;
|
||||
interrupt-parent = <&gpio3>;
|
||||
interrupts = <30 IRQ_TYPE_NONE>; /* GPIO_94 */
|
||||
pendown-gpio = <&gpio3 30 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio3 30 GPIO_ACTIVE_LOW>;
|
||||
vcc-supply = <&vaux4>;
|
||||
|
||||
ti,x-min = /bits/ 16 <0>;
|
||||
|
|
|
|||
|
|
@ -354,7 +354,7 @@
|
|||
|
||||
interrupt-parent = <&gpio1>;
|
||||
interrupts = <15 0>; /* gpio1_wk15 */
|
||||
pendown-gpio = <&gpio1 15 GPIO_ACTIVE_HIGH>;
|
||||
pendown-gpio = <&gpio1 15 GPIO_ACTIVE_LOW>;
|
||||
|
||||
|
||||
ti,x-min = /bits/ 16 <0x0>;
|
||||
|
|
|
|||
|
|
@ -393,8 +393,8 @@
|
|||
#address-cells = <3>;
|
||||
#size-cells = <2>;
|
||||
|
||||
ranges = <0x81000000 0 0x40200000 0x40200000 0 0x00100000>,
|
||||
<0x82000000 0 0x40300000 0x40300000 0 0x00d00000>;
|
||||
ranges = <0x81000000 0x0 0x00000000 0x40200000 0x0 0x00100000>,
|
||||
<0x82000000 0x0 0x40300000 0x40300000 0x0 0x00d00000>;
|
||||
|
||||
interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
|
||||
interrupt-names = "msi";
|
||||
|
|
|
|||
|
|
@ -451,8 +451,8 @@
|
|||
#address-cells = <3>;
|
||||
#size-cells = <2>;
|
||||
|
||||
ranges = <0x81000000 0 0x0fe00000 0x0fe00000 0 0x00100000 /* downstream I/O */
|
||||
0x82000000 0 0x08000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
|
||||
ranges = <0x81000000 0x0 0x00000000 0x0fe00000 0x0 0x00010000 /* I/O */
|
||||
0x82000000 0x0 0x08000000 0x08000000 0x0 0x07e00000>; /* MEM */
|
||||
|
||||
interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
|
||||
interrupt-names = "msi";
|
||||
|
|
@ -502,8 +502,8 @@
|
|||
#address-cells = <3>;
|
||||
#size-cells = <2>;
|
||||
|
||||
ranges = <0x81000000 0 0x31e00000 0x31e00000 0 0x00100000 /* downstream I/O */
|
||||
0x82000000 0 0x2e000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
|
||||
ranges = <0x81000000 0x0 0x00000000 0x31e00000 0x0 0x00010000 /* I/O */
|
||||
0x82000000 0x0 0x2e000000 0x2e000000 0x0 0x03e00000>; /* MEM */
|
||||
|
||||
interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
|
||||
interrupt-names = "msi";
|
||||
|
|
@ -553,8 +553,8 @@
|
|||
#address-cells = <3>;
|
||||
#size-cells = <2>;
|
||||
|
||||
ranges = <0x81000000 0 0x35e00000 0x35e00000 0 0x00100000 /* downstream I/O */
|
||||
0x82000000 0 0x32000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
|
||||
ranges = <0x81000000 0x0 0x00000000 0x35e00000 0x0 0x00010000 /* I/O */
|
||||
0x82000000 0x0 0x32000000 0x32000000 0x0 0x03e00000>; /* MEM */
|
||||
|
||||
interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
|
||||
interrupt-names = "msi";
|
||||
|
|
|
|||
|
|
@ -571,7 +571,7 @@
|
|||
interrupts = <29>;
|
||||
clocks = <&clocks CLK_CSIS>,
|
||||
<&clocks SCLK_CSIS>;
|
||||
clock-names = "clk_csis",
|
||||
clock-names = "csis",
|
||||
"sclk_csis";
|
||||
bus-width = <4>;
|
||||
status = "disabled";
|
||||
|
|
|
|||
|
|
@ -284,6 +284,88 @@
|
|||
slew-rate = <2>;
|
||||
};
|
||||
};
|
||||
|
||||
can1_pins_a: can1-0 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('A', 12, AF9)>; /* CAN1_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('A', 11, AF9)>; /* CAN1_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
|
||||
can1_pins_b: can1-1 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('B', 9, AF9)>; /* CAN1_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('B', 8, AF9)>; /* CAN1_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
|
||||
can1_pins_c: can1-2 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('D', 1, AF9)>; /* CAN1_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('D', 0, AF9)>; /* CAN1_RX */
|
||||
bias-pull-up;
|
||||
|
||||
};
|
||||
};
|
||||
|
||||
can1_pins_d: can1-3 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('H', 13, AF9)>; /* CAN1_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('H', 14, AF9)>; /* CAN1_RX */
|
||||
bias-pull-up;
|
||||
|
||||
};
|
||||
};
|
||||
|
||||
can2_pins_a: can2-0 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('B', 6, AF9)>; /* CAN2_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('B', 5, AF9)>; /* CAN2_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
|
||||
can2_pins_b: can2-1 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('B', 13, AF9)>; /* CAN2_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('B', 12, AF9)>; /* CAN2_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
|
||||
can3_pins_a: can3-0 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('A', 15, AF11)>; /* CAN3_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('A', 8, AF11)>; /* CAN3_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
|
||||
can3_pins_b: can3-1 {
|
||||
pins1 {
|
||||
pinmux = <STM32_PINMUX('B', 4, AF11)>; /* CAN3_TX */
|
||||
};
|
||||
pins2 {
|
||||
pinmux = <STM32_PINMUX('B', 3, AF11)>; /* CAN3_RX */
|
||||
bias-pull-up;
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
|
|||
|
|
@ -132,6 +132,7 @@
|
|||
reg = <0x2c0f0000 0x1000>;
|
||||
interrupts = <0 84 4>;
|
||||
cache-level = <2>;
|
||||
cache-unified;
|
||||
};
|
||||
|
||||
pmu {
|
||||
|
|
|
|||
|
|
@ -1,7 +1,5 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-only */
|
||||
/*
|
||||
* arch/arm/include/asm/bugs.h
|
||||
*
|
||||
* Copyright (C) 1995-2003 Russell King
|
||||
*/
|
||||
#ifndef __ASM_BUGS_H
|
||||
|
|
@ -10,10 +8,8 @@
|
|||
extern void check_writebuffer_bugs(void);
|
||||
|
||||
#ifdef CONFIG_MMU
|
||||
extern void check_bugs(void);
|
||||
extern void check_other_bugs(void);
|
||||
#else
|
||||
#define check_bugs() do { } while (0)
|
||||
#define check_other_bugs() do { } while (0)
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
#include <linux/init.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <asm/bugs.h>
|
||||
#include <asm/proc-fns.h>
|
||||
|
||||
|
|
@ -11,7 +12,7 @@ void check_other_bugs(void)
|
|||
#endif
|
||||
}
|
||||
|
||||
void __init check_bugs(void)
|
||||
void __init arch_cpu_finalize_init(void)
|
||||
{
|
||||
check_writebuffer_bugs();
|
||||
check_other_bugs();
|
||||
|
|
|
|||
|
|
@ -300,6 +300,29 @@ static int unwind_exec_pop_subset_r0_to_r3(struct unwind_ctrl_block *ctrl,
|
|||
return URC_OK;
|
||||
}
|
||||
|
||||
static unsigned long unwind_decode_uleb128(struct unwind_ctrl_block *ctrl)
|
||||
{
|
||||
unsigned long bytes = 0;
|
||||
unsigned long insn;
|
||||
unsigned long result = 0;
|
||||
|
||||
/*
|
||||
* unwind_get_byte() will advance `ctrl` one instruction at a time, so
|
||||
* loop until we get an instruction byte where bit 7 is not set.
|
||||
*
|
||||
* Note: This decodes a maximum of 4 bytes to output 28 bits data where
|
||||
* max is 0xfffffff: that will cover a vsp increment of 1073742336, hence
|
||||
* it is sufficient for unwinding the stack.
|
||||
*/
|
||||
do {
|
||||
insn = unwind_get_byte(ctrl);
|
||||
result |= (insn & 0x7f) << (bytes * 7);
|
||||
bytes++;
|
||||
} while (!!(insn & 0x80) && (bytes != sizeof(result)));
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Execute the current unwind instruction.
|
||||
*/
|
||||
|
|
@ -353,7 +376,7 @@ static int unwind_exec_insn(struct unwind_ctrl_block *ctrl)
|
|||
if (ret)
|
||||
goto error;
|
||||
} else if (insn == 0xb2) {
|
||||
unsigned long uleb128 = unwind_get_byte(ctrl);
|
||||
unsigned long uleb128 = unwind_decode_uleb128(ctrl);
|
||||
|
||||
ctrl->vrs[SP] += 0x204 + (uleb128 << 2);
|
||||
} else {
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@
|
|||
#include <linux/io.h>
|
||||
#include <asm/mach/time.h>
|
||||
#include "soc.h"
|
||||
#include "platform.h"
|
||||
|
||||
/*************************************************************************
|
||||
* Timer handling for EP93xx
|
||||
|
|
@ -60,7 +61,7 @@ static u64 notrace ep93xx_read_sched_clock(void)
|
|||
return ret;
|
||||
}
|
||||
|
||||
u64 ep93xx_clocksource_read(struct clocksource *c)
|
||||
static u64 ep93xx_clocksource_read(struct clocksource *c)
|
||||
{
|
||||
u64 ret;
|
||||
|
||||
|
|
|
|||
|
|
@ -63,6 +63,9 @@ static void __init orion5x_dt_init(void)
|
|||
if (of_machine_is_compatible("maxtor,shared-storage-2"))
|
||||
mss2_init();
|
||||
|
||||
if (of_machine_is_compatible("lacie,d2-network"))
|
||||
d2net_init();
|
||||
|
||||
of_platform_default_populate(NULL, orion5x_auxdata_lookup, NULL);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -75,6 +75,12 @@ extern void mss2_init(void);
|
|||
static inline void mss2_init(void) {}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MACH_D2NET_DT
|
||||
void d2net_init(void);
|
||||
#else
|
||||
static inline void d2net_init(void) {}
|
||||
#endif
|
||||
|
||||
/*****************************************************************************
|
||||
* Helpers to access Orion registers
|
||||
****************************************************************************/
|
||||
|
|
|
|||
|
|
@ -653,7 +653,7 @@ static void __init map_sa1100_gpio_regs( void )
|
|||
*/
|
||||
static void __init get_assabet_scr(void)
|
||||
{
|
||||
unsigned long uninitialized_var(scr), i;
|
||||
unsigned long scr, i;
|
||||
|
||||
GPDR |= 0x3fc; /* Configure GPIO 9:2 as outputs */
|
||||
GPSR = 0x3fc; /* Write 0xFF to GPIO 9:2 */
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/**
|
||||
/*
|
||||
* arch/arm/mac-sa1100/jornada720_ssp.c
|
||||
*
|
||||
* Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
|
||||
|
|
@ -26,6 +26,7 @@ static unsigned long jornada_ssp_flags;
|
|||
|
||||
/**
|
||||
* jornada_ssp_reverse - reverses input byte
|
||||
* @byte: input byte to reverse
|
||||
*
|
||||
* we need to reverse all data we receive from the mcu due to its physical location
|
||||
* returns : 01110111 -> 11101110
|
||||
|
|
@ -46,6 +47,7 @@ EXPORT_SYMBOL(jornada_ssp_reverse);
|
|||
|
||||
/**
|
||||
* jornada_ssp_byte - waits for ready ssp bus and sends byte
|
||||
* @byte: input byte to transmit
|
||||
*
|
||||
* waits for fifo buffer to clear and then transmits, if it doesn't then we will
|
||||
* timeout after <timeout> rounds. Needs mcu running before its called.
|
||||
|
|
@ -77,6 +79,7 @@ EXPORT_SYMBOL(jornada_ssp_byte);
|
|||
|
||||
/**
|
||||
* jornada_ssp_inout - decide if input is command or trading byte
|
||||
* @byte: input byte to send (may be %TXDUMMY)
|
||||
*
|
||||
* returns : (jornada_ssp_byte(byte)) on success
|
||||
* : %-ETIMEDOUT on timeout failure
|
||||
|
|
|
|||
|
|
@ -799,7 +799,7 @@ static int alignment_get_thumb(struct pt_regs *regs, u16 *ip, u16 *inst)
|
|||
static int
|
||||
do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
|
||||
{
|
||||
union offset_union uninitialized_var(offset);
|
||||
union offset_union offset;
|
||||
unsigned long instrptr;
|
||||
int (*handler)(unsigned long addr, u32 instr, struct pt_regs *regs);
|
||||
unsigned int type;
|
||||
|
|
|
|||
|
|
@ -40,7 +40,7 @@ enum probes_insn checker_stack_use_imm_0xx(probes_opcode_t insn,
|
|||
* Different from other insn uses imm8, the real addressing offset of
|
||||
* STRD in T32 encoding should be imm8 * 4. See ARMARM description.
|
||||
*/
|
||||
enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
|
||||
static enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
|
||||
struct arch_probes_insn *asi,
|
||||
const struct decode_header *h)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -231,7 +231,7 @@ singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb)
|
|||
* kprobe, and that level is reserved for user kprobe handlers, so we can't
|
||||
* risk encountering a new kprobe in an interrupt handler.
|
||||
*/
|
||||
void __kprobes kprobe_handler(struct pt_regs *regs)
|
||||
static void __kprobes kprobe_handler(struct pt_regs *regs)
|
||||
{
|
||||
struct kprobe *p, *cur;
|
||||
struct kprobe_ctlblk *kcb;
|
||||
|
|
|
|||
|
|
@ -145,8 +145,6 @@ __arch_remove_optimized_kprobe(struct optimized_kprobe *op, int dirty)
|
|||
}
|
||||
}
|
||||
|
||||
extern void kprobe_handler(struct pt_regs *regs);
|
||||
|
||||
static void
|
||||
optimized_callback(struct optimized_kprobe *op, struct pt_regs *regs)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -720,7 +720,7 @@ static const char coverage_register_lookup[16] = {
|
|||
[REG_TYPE_NOSPPCX] = COVERAGE_ANY_REG | COVERAGE_SP,
|
||||
};
|
||||
|
||||
unsigned coverage_start_registers(const struct decode_header *h)
|
||||
static unsigned coverage_start_registers(const struct decode_header *h)
|
||||
{
|
||||
unsigned regs = 0;
|
||||
int i;
|
||||
|
|
|
|||
|
|
@ -453,3 +453,7 @@ void kprobe_thumb32_test_cases(void);
|
|||
#else
|
||||
void kprobe_arm_test_cases(void);
|
||||
#endif
|
||||
|
||||
void __kprobes_test_case_start(void);
|
||||
void __kprobes_test_case_end_16(void);
|
||||
void __kprobes_test_case_end_32(void);
|
||||
|
|
|
|||
|
|
@ -129,7 +129,7 @@
|
|||
status = "okay";
|
||||
clock-frequency = <100000>;
|
||||
i2c-sda-falling-time-ns = <890>; /* hcnt */
|
||||
i2c-sdl-falling-time-ns = <890>; /* lcnt */
|
||||
i2c-scl-falling-time-ns = <890>; /* lcnt */
|
||||
|
||||
adc@14 {
|
||||
compatible = "lltc,ltc2497";
|
||||
|
|
|
|||
|
|
@ -1451,7 +1451,7 @@
|
|||
};
|
||||
};
|
||||
|
||||
camss: camss@1b00000 {
|
||||
camss: camss@1b0ac00 {
|
||||
compatible = "qcom,msm8916-camss";
|
||||
reg = <0x1b0ac00 0x200>,
|
||||
<0x1b00030 0x4>,
|
||||
|
|
|
|||
|
|
@ -49,17 +49,14 @@
|
|||
opp-shared;
|
||||
opp-800000000 {
|
||||
opp-hz = /bits/ 64 <800000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
};
|
||||
opp-1000000000 {
|
||||
opp-hz = /bits/ 64 <1000000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
};
|
||||
opp-1200000000 {
|
||||
opp-hz = /bits/ 64 <1200000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
opp-suspend;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -60,17 +60,14 @@
|
|||
opp-shared;
|
||||
opp-800000000 {
|
||||
opp-hz = /bits/ 64 <800000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
};
|
||||
opp-1000000000 {
|
||||
opp-hz = /bits/ 64 <1000000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
};
|
||||
opp-1200000000 {
|
||||
opp-hz = /bits/ 64 <1200000000>;
|
||||
opp-microvolt = <820000>;
|
||||
clock-latency-ns = <300000>;
|
||||
opp-suspend;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -269,7 +269,7 @@
|
|||
};
|
||||
|
||||
scif1_pins: scif1 {
|
||||
groups = "scif1_data_b", "scif1_ctrl";
|
||||
groups = "scif1_data_b";
|
||||
function = "scif1";
|
||||
};
|
||||
|
||||
|
|
@ -329,7 +329,6 @@
|
|||
&scif1 {
|
||||
pinctrl-0 = <&scif1_pins>;
|
||||
pinctrl-names = "default";
|
||||
uart-has-rtscts;
|
||||
|
||||
status = "okay";
|
||||
};
|
||||
|
|
|
|||
|
|
@ -41,7 +41,7 @@
|
|||
(((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT)
|
||||
|
||||
#define MIDR_CPU_MODEL(imp, partnum) \
|
||||
(((imp) << MIDR_IMPLEMENTOR_SHIFT) | \
|
||||
((_AT(u32, imp) << MIDR_IMPLEMENTOR_SHIFT) | \
|
||||
(0xf << MIDR_ARCHITECTURE_SHIFT) | \
|
||||
((partnum) << MIDR_PARTNUM_SHIFT))
|
||||
|
||||
|
|
@ -59,6 +59,7 @@
|
|||
#define ARM_CPU_IMP_NVIDIA 0x4E
|
||||
#define ARM_CPU_IMP_FUJITSU 0x46
|
||||
#define ARM_CPU_IMP_HISI 0x48
|
||||
#define ARM_CPU_IMP_AMPERE 0xC0
|
||||
|
||||
#define ARM_CPU_PART_AEM_V8 0xD0F
|
||||
#define ARM_CPU_PART_FOUNDATION 0xD00
|
||||
|
|
@ -102,6 +103,8 @@
|
|||
|
||||
#define HISI_CPU_PART_TSV110 0xD01
|
||||
|
||||
#define AMPERE_CPU_PART_AMPERE1 0xAC3
|
||||
|
||||
#define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53)
|
||||
#define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57)
|
||||
#define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72)
|
||||
|
|
@ -133,6 +136,7 @@
|
|||
#define MIDR_NVIDIA_CARMEL MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_CARMEL)
|
||||
#define MIDR_FUJITSU_A64FX MIDR_CPU_MODEL(ARM_CPU_IMP_FUJITSU, FUJITSU_CPU_PART_A64FX)
|
||||
#define MIDR_HISI_TSV110 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_TSV110)
|
||||
#define MIDR_AMPERE1 MIDR_CPU_MODEL(ARM_CPU_IMP_AMPERE, AMPERE_CPU_PART_AMPERE1)
|
||||
|
||||
/* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */
|
||||
#define MIDR_FUJITSU_ERRATUM_010001 MIDR_FUJITSU_A64FX
|
||||
|
|
|
|||
|
|
@ -116,6 +116,7 @@ void user_regs_reset_single_step(struct user_pt_regs *regs,
|
|||
void kernel_enable_single_step(struct pt_regs *regs);
|
||||
void kernel_disable_single_step(void);
|
||||
int kernel_active_single_step(void);
|
||||
void kernel_rewind_single_step(struct pt_regs *regs);
|
||||
|
||||
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
||||
int reinstall_suspended_bps(struct pt_regs *regs);
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
|
|||
({ \
|
||||
efi_virtmap_load(); \
|
||||
__efi_fpsimd_begin(); \
|
||||
spin_lock(&efi_rt_lock); \
|
||||
raw_spin_lock(&efi_rt_lock); \
|
||||
})
|
||||
|
||||
#define arch_efi_call_virt(p, f, args...) \
|
||||
|
|
@ -37,12 +37,12 @@ int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
|
|||
|
||||
#define arch_efi_call_virt_teardown() \
|
||||
({ \
|
||||
spin_unlock(&efi_rt_lock); \
|
||||
raw_spin_unlock(&efi_rt_lock); \
|
||||
__efi_fpsimd_end(); \
|
||||
efi_virtmap_unload(); \
|
||||
})
|
||||
|
||||
extern spinlock_t efi_rt_lock;
|
||||
extern raw_spinlock_t efi_rt_lock;
|
||||
efi_status_t __efi_rt_asm_wrapper(void *, const char *, ...);
|
||||
|
||||
#define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT)
|
||||
|
|
|
|||
|
|
@ -102,8 +102,14 @@
|
|||
#define SB_BARRIER_INSN __SYS_BARRIER_INSN(0, 7, 31)
|
||||
|
||||
#define SYS_DC_ISW sys_insn(1, 0, 7, 6, 2)
|
||||
#define SYS_DC_IGSW sys_insn(1, 0, 7, 6, 4)
|
||||
#define SYS_DC_IGDSW sys_insn(1, 0, 7, 6, 6)
|
||||
#define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2)
|
||||
#define SYS_DC_CGSW sys_insn(1, 0, 7, 10, 4)
|
||||
#define SYS_DC_CGDSW sys_insn(1, 0, 7, 10, 6)
|
||||
#define SYS_DC_CISW sys_insn(1, 0, 7, 14, 2)
|
||||
#define SYS_DC_CIGSW sys_insn(1, 0, 7, 14, 4)
|
||||
#define SYS_DC_CIGDSW sys_insn(1, 0, 7, 14, 6)
|
||||
|
||||
#define SYS_OSDTRRX_EL1 sys_reg(2, 0, 0, 0, 2)
|
||||
#define SYS_MDCCINT_EL1 sys_reg(2, 0, 0, 2, 0)
|
||||
|
|
|
|||
|
|
@ -1145,6 +1145,10 @@ u8 spectre_bhb_loop_affected(int scope)
|
|||
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
|
||||
{},
|
||||
};
|
||||
static const struct midr_range spectre_bhb_k11_list[] = {
|
||||
MIDR_ALL_VERSIONS(MIDR_AMPERE1),
|
||||
{},
|
||||
};
|
||||
static const struct midr_range spectre_bhb_k8_list[] = {
|
||||
MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
|
||||
MIDR_ALL_VERSIONS(MIDR_CORTEX_A57),
|
||||
|
|
@ -1155,6 +1159,8 @@ u8 spectre_bhb_loop_affected(int scope)
|
|||
k = 32;
|
||||
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k24_list))
|
||||
k = 24;
|
||||
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k11_list))
|
||||
k = 11;
|
||||
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k8_list))
|
||||
k = 8;
|
||||
|
||||
|
|
|
|||
|
|
@ -441,6 +441,11 @@ int kernel_active_single_step(void)
|
|||
}
|
||||
NOKPROBE_SYMBOL(kernel_active_single_step);
|
||||
|
||||
void kernel_rewind_single_step(struct pt_regs *regs)
|
||||
{
|
||||
set_regs_spsr_ss(regs);
|
||||
}
|
||||
|
||||
/* ptrace API */
|
||||
void user_enable_single_step(struct task_struct *task)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -144,7 +144,7 @@ asmlinkage efi_status_t efi_handle_corrupted_x18(efi_status_t s, const char *f)
|
|||
return s;
|
||||
}
|
||||
|
||||
DEFINE_SPINLOCK(efi_rt_lock);
|
||||
DEFINE_RAW_SPINLOCK(efi_rt_lock);
|
||||
|
||||
asmlinkage u64 *efi_rt_stack_top __ro_after_init;
|
||||
|
||||
|
|
|
|||
|
|
@ -223,6 +223,8 @@ int kgdb_arch_handle_exception(int exception_vector, int signo,
|
|||
*/
|
||||
if (!kernel_active_single_step())
|
||||
kernel_enable_single_step(linux_regs);
|
||||
else
|
||||
kernel_rewind_single_step(linux_regs);
|
||||
err = 0;
|
||||
break;
|
||||
default:
|
||||
|
|
|
|||
|
|
@ -407,8 +407,8 @@ static void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *re
|
|||
}
|
||||
}
|
||||
|
||||
#define VM_FAULT_BADMAP 0x010000
|
||||
#define VM_FAULT_BADACCESS 0x020000
|
||||
#define VM_FAULT_BADMAP ((__force vm_fault_t)0x010000)
|
||||
#define VM_FAULT_BADACCESS ((__force vm_fault_t)0x020000)
|
||||
|
||||
static int __do_page_fault(struct vm_area_struct *vma, unsigned long addr,
|
||||
unsigned int mm_flags, unsigned long vm_flags)
|
||||
|
|
|
|||
|
|
@ -407,7 +407,7 @@ void create_pgtable_mapping(phys_addr_t start, phys_addr_t end)
|
|||
static void __init create_mapping_noalloc(phys_addr_t phys, unsigned long virt,
|
||||
phys_addr_t size, pgprot_t prot)
|
||||
{
|
||||
if ((virt >= PAGE_END) && (virt < VMALLOC_START)) {
|
||||
if (virt < PAGE_OFFSET) {
|
||||
pr_warn("BUG: not creating mapping for %pa at 0x%016lx - outside kernel range\n",
|
||||
&phys, virt);
|
||||
return;
|
||||
|
|
@ -434,7 +434,7 @@ void __init create_pgd_mapping(struct mm_struct *mm, phys_addr_t phys,
|
|||
static void update_mapping_prot(phys_addr_t phys, unsigned long virt,
|
||||
phys_addr_t size, pgprot_t prot)
|
||||
{
|
||||
if ((virt >= PAGE_END) && (virt < VMALLOC_START)) {
|
||||
if (virt < PAGE_OFFSET) {
|
||||
pr_warn("BUG: not updating mapping for %pa at 0x%016lx - outside kernel range\n",
|
||||
&phys, virt);
|
||||
return;
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@ menu "Processor type and features"
|
|||
|
||||
config IA64
|
||||
bool
|
||||
select ARCH_HAS_CPU_FINALIZE_INIT
|
||||
select ARCH_MIGHT_HAVE_PC_PARPORT
|
||||
select ARCH_MIGHT_HAVE_PC_SERIO
|
||||
select ACPI
|
||||
|
|
|
|||
|
|
@ -1,20 +0,0 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* This is included by init/main.c to check for architecture-dependent bugs.
|
||||
*
|
||||
* Needs:
|
||||
* void check_bugs(void);
|
||||
*
|
||||
* Based on <asm-alpha/bugs.h>.
|
||||
*
|
||||
* Modified 1998, 1999, 2003
|
||||
* David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co.
|
||||
*/
|
||||
#ifndef _ASM_IA64_BUGS_H
|
||||
#define _ASM_IA64_BUGS_H
|
||||
|
||||
#include <asm/processor.h>
|
||||
|
||||
extern void check_bugs (void);
|
||||
|
||||
#endif /* _ASM_IA64_BUGS_H */
|
||||
|
|
@ -444,7 +444,7 @@ static void
|
|||
do_copy_task_regs (struct task_struct *task, struct unw_frame_info *info, void *arg)
|
||||
{
|
||||
unsigned long mask, sp, nat_bits = 0, ar_rnat, urbs_end, cfm;
|
||||
unsigned long uninitialized_var(ip); /* GCC be quiet */
|
||||
unsigned long ip;
|
||||
elf_greg_t *dst = arg;
|
||||
struct pt_regs *pt;
|
||||
char nat;
|
||||
|
|
|
|||
|
|
@ -581,7 +581,7 @@ static int salinfo_cpu_pre_down(unsigned int cpu)
|
|||
* 'data' contains an integer that corresponds to the feature we're
|
||||
* testing
|
||||
*/
|
||||
static int proc_salinfo_show(struct seq_file *m, void *v)
|
||||
static int __maybe_unused proc_salinfo_show(struct seq_file *m, void *v)
|
||||
{
|
||||
unsigned long data = (unsigned long)v;
|
||||
seq_puts(m, (sal_platform_features & data) ? "1\n" : "0\n");
|
||||
|
|
|
|||
|
|
@ -1073,8 +1073,7 @@ cpu_init (void)
|
|||
}
|
||||
}
|
||||
|
||||
void __init
|
||||
check_bugs (void)
|
||||
void __init arch_cpu_finalize_init(void)
|
||||
{
|
||||
ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles,
|
||||
(unsigned long) __end___mckinley_e9_bundles);
|
||||
|
|
|
|||
|
|
@ -81,7 +81,7 @@ skip:
|
|||
return __per_cpu_start + __per_cpu_offset[smp_processor_id()];
|
||||
}
|
||||
|
||||
static inline void
|
||||
static inline __init void
|
||||
alloc_per_cpu_data(void)
|
||||
{
|
||||
size_t size = PERCPU_PAGE_SIZE * num_possible_cpus();
|
||||
|
|
|
|||
|
|
@ -180,7 +180,7 @@ static void *per_cpu_node_setup(void *cpu_data, int node)
|
|||
void __init setup_per_cpu_areas(void)
|
||||
{
|
||||
struct pcpu_alloc_info *ai;
|
||||
struct pcpu_group_info *uninitialized_var(gi);
|
||||
struct pcpu_group_info *gi;
|
||||
unsigned int *cpu_map;
|
||||
void *base;
|
||||
unsigned long base_offset;
|
||||
|
|
|
|||
|
|
@ -369,7 +369,7 @@ EXPORT_SYMBOL(flush_tlb_range);
|
|||
|
||||
void ia64_tlb_init(void)
|
||||
{
|
||||
ia64_ptce_info_t uninitialized_var(ptce_info); /* GCC be quiet */
|
||||
ia64_ptce_info_t ptce_info;
|
||||
u64 tr_pgbits;
|
||||
long status;
|
||||
pal_vm_info_1_u_t vm_info_1;
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@ config M68K
|
|||
default y
|
||||
select ARCH_32BIT_OFF_T
|
||||
select ARCH_HAS_BINFMT_FLAT
|
||||
select ARCH_HAS_CPU_FINALIZE_INIT if MMU
|
||||
select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
|
||||
select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
|
||||
select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
|
||||
|
|
|
|||
|
|
@ -1,21 +0,0 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* include/asm-m68k/bugs.h
|
||||
*
|
||||
* Copyright (C) 1994 Linus Torvalds
|
||||
*/
|
||||
|
||||
/*
|
||||
* This is included by init/main.c to check for architecture-dependent bugs.
|
||||
*
|
||||
* Needs:
|
||||
* void check_bugs(void);
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_MMU
|
||||
extern void check_bugs(void); /* in arch/m68k/kernel/setup.c */
|
||||
#else
|
||||
static void check_bugs(void)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
|
@ -10,6 +10,7 @@
|
|||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/delay.h>
|
||||
|
|
@ -527,7 +528,7 @@ static int __init proc_hardware_init(void)
|
|||
module_init(proc_hardware_init);
|
||||
#endif
|
||||
|
||||
void check_bugs(void)
|
||||
void __init arch_cpu_finalize_init(void)
|
||||
{
|
||||
#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
|
||||
if (m68k_fputype == 0) {
|
||||
|
|
|
|||
|
|
@ -883,11 +883,17 @@ static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *
|
|||
}
|
||||
|
||||
static inline void __user *
|
||||
get_sigframe(struct ksignal *ksig, size_t frame_size)
|
||||
get_sigframe(struct ksignal *ksig, struct pt_regs *tregs, size_t frame_size)
|
||||
{
|
||||
unsigned long usp = sigsp(rdusp(), ksig);
|
||||
unsigned long gap = 0;
|
||||
|
||||
return (void __user *)((usp - frame_size) & -8UL);
|
||||
if (CPU_IS_020_OR_030 && tregs->format == 0xb) {
|
||||
/* USP is unreliable so use worst-case value */
|
||||
gap = 256;
|
||||
}
|
||||
|
||||
return (void __user *)((usp - gap - frame_size) & -8UL);
|
||||
}
|
||||
|
||||
static int setup_frame(struct ksignal *ksig, sigset_t *set,
|
||||
|
|
@ -905,7 +911,7 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set,
|
|||
return -EFAULT;
|
||||
}
|
||||
|
||||
frame = get_sigframe(ksig, sizeof(*frame) + fsize);
|
||||
frame = get_sigframe(ksig, tregs, sizeof(*frame) + fsize);
|
||||
|
||||
if (fsize)
|
||||
err |= copy_to_user (frame + 1, regs + 1, fsize);
|
||||
|
|
@ -976,7 +982,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
|
|||
return -EFAULT;
|
||||
}
|
||||
|
||||
frame = get_sigframe(ksig, sizeof(*frame));
|
||||
frame = get_sigframe(ksig, tregs, sizeof(*frame));
|
||||
|
||||
if (fsize)
|
||||
err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@ config MIPS
|
|||
select ARCH_32BIT_OFF_T if !64BIT
|
||||
select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
|
||||
select ARCH_CLOCKSOURCE_DATA
|
||||
select ARCH_HAS_CPU_FINALIZE_INIT
|
||||
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
|
||||
select ARCH_HAS_UBSAN_SANITIZE_ALL
|
||||
select ARCH_SUPPORTS_UPROBES
|
||||
|
|
|
|||
|
|
@ -30,6 +30,7 @@
|
|||
*
|
||||
*/
|
||||
|
||||
#include <linux/dma-map-ops.h> /* for dma_default_coherent */
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
|
|
@ -623,17 +624,18 @@ u32 au1xxx_dbdma_put_source(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
|
|||
dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
|
||||
|
||||
/*
|
||||
* There is an errata on the Au1200/Au1550 parts that could result
|
||||
* in "stale" data being DMA'ed. It has to do with the snoop logic on
|
||||
* the cache eviction buffer. DMA_NONCOHERENT is on by default for
|
||||
* these parts. If it is fixed in the future, these dma_cache_inv will
|
||||
* just be nothing more than empty macros. See io.h.
|
||||
* There is an erratum on certain Au1200/Au1550 revisions that could
|
||||
* result in "stale" data being DMA'ed. It has to do with the snoop
|
||||
* logic on the cache eviction buffer. dma_default_coherent is set
|
||||
* to false on these parts.
|
||||
*/
|
||||
dma_cache_wback_inv((unsigned long)buf, nbytes);
|
||||
if (!dma_default_coherent)
|
||||
dma_cache_wback_inv(KSEG0ADDR(buf), nbytes);
|
||||
dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
|
||||
wmb(); /* drain writebuffer */
|
||||
dma_cache_wback_inv((unsigned long)dp, sizeof(*dp));
|
||||
ctp->chan_ptr->ddma_dbell = 0;
|
||||
wmb(); /* force doorbell write out to dma engine */
|
||||
|
||||
/* Get next descriptor pointer. */
|
||||
ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
|
||||
|
|
@ -685,17 +687,18 @@ u32 au1xxx_dbdma_put_dest(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
|
|||
dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1);
|
||||
#endif
|
||||
/*
|
||||
* There is an errata on the Au1200/Au1550 parts that could result in
|
||||
* "stale" data being DMA'ed. It has to do with the snoop logic on the
|
||||
* cache eviction buffer. DMA_NONCOHERENT is on by default for these
|
||||
* parts. If it is fixed in the future, these dma_cache_inv will just
|
||||
* be nothing more than empty macros. See io.h.
|
||||
* There is an erratum on certain Au1200/Au1550 revisions that could
|
||||
* result in "stale" data being DMA'ed. It has to do with the snoop
|
||||
* logic on the cache eviction buffer. dma_default_coherent is set
|
||||
* to false on these parts.
|
||||
*/
|
||||
dma_cache_inv((unsigned long)buf, nbytes);
|
||||
if (!dma_default_coherent)
|
||||
dma_cache_inv(KSEG0ADDR(buf), nbytes);
|
||||
dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
|
||||
wmb(); /* drain writebuffer */
|
||||
dma_cache_wback_inv((unsigned long)dp, sizeof(*dp));
|
||||
ctp->chan_ptr->ddma_dbell = 0;
|
||||
wmb(); /* force doorbell write out to dma engine */
|
||||
|
||||
/* Get next descriptor pointer. */
|
||||
ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
|
||||
|
|
|
|||
|
|
@ -53,8 +53,6 @@ CONFIG_IPV6_SUBTREES=y
|
|||
CONFIG_NETWORK_SECMARK=y
|
||||
CONFIG_IP_SCTP=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_DECNET_ROUTER=y
|
||||
# CONFIG_WIRELESS is not set
|
||||
# CONFIG_UEVENT_HELPER is not set
|
||||
# CONFIG_FW_LOADER is not set
|
||||
|
|
|
|||
|
|
@ -49,8 +49,6 @@ CONFIG_IPV6_SUBTREES=y
|
|||
CONFIG_NETWORK_SECMARK=y
|
||||
CONFIG_IP_SCTP=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_DECNET_ROUTER=y
|
||||
# CONFIG_WIRELESS is not set
|
||||
# CONFIG_UEVENT_HELPER is not set
|
||||
# CONFIG_FW_LOADER is not set
|
||||
|
|
|
|||
|
|
@ -48,8 +48,6 @@ CONFIG_IPV6_SUBTREES=y
|
|||
CONFIG_NETWORK_SECMARK=y
|
||||
CONFIG_IP_SCTP=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_DECNET_ROUTER=y
|
||||
# CONFIG_WIRELESS is not set
|
||||
# CONFIG_UEVENT_HELPER is not set
|
||||
# CONFIG_FW_LOADER is not set
|
||||
|
|
|
|||
|
|
@ -69,7 +69,6 @@ CONFIG_IP_NF_RAW=m
|
|||
CONFIG_IP_NF_ARPTABLES=m
|
||||
CONFIG_IP_NF_ARPFILTER=m
|
||||
CONFIG_IP_NF_ARP_MANGLE=m
|
||||
CONFIG_DECNET_NF_GRABULATOR=m
|
||||
CONFIG_BRIDGE_NF_EBTABLES=m
|
||||
CONFIG_BRIDGE_EBT_BROUTE=m
|
||||
CONFIG_BRIDGE_EBT_T_FILTER=m
|
||||
|
|
@ -99,7 +98,6 @@ CONFIG_ATM_MPOA=m
|
|||
CONFIG_ATM_BR2684=m
|
||||
CONFIG_BRIDGE=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_LLC2=m
|
||||
CONFIG_ATALK=m
|
||||
CONFIG_DEV_APPLETALK=m
|
||||
|
|
|
|||
|
|
@ -106,7 +106,6 @@ CONFIG_IP6_NF_FILTER=m
|
|||
CONFIG_IP6_NF_TARGET_REJECT=m
|
||||
CONFIG_IP6_NF_MANGLE=m
|
||||
CONFIG_IP6_NF_RAW=m
|
||||
CONFIG_DECNET_NF_GRABULATOR=m
|
||||
CONFIG_BRIDGE_NF_EBTABLES=m
|
||||
CONFIG_BRIDGE_EBT_BROUTE=m
|
||||
CONFIG_BRIDGE_EBT_T_FILTER=m
|
||||
|
|
@ -127,7 +126,6 @@ CONFIG_BRIDGE_EBT_REDIRECT=m
|
|||
CONFIG_BRIDGE_EBT_SNAT=m
|
||||
CONFIG_BRIDGE_EBT_LOG=m
|
||||
CONFIG_BRIDGE=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_NET_SCHED=y
|
||||
CONFIG_NET_SCH_CBQ=m
|
||||
CONFIG_NET_SCH_HTB=m
|
||||
|
|
|
|||
|
|
@ -117,7 +117,6 @@ CONFIG_IP6_NF_FILTER=m
|
|||
CONFIG_IP6_NF_TARGET_REJECT=m
|
||||
CONFIG_IP6_NF_MANGLE=m
|
||||
CONFIG_IP6_NF_RAW=m
|
||||
CONFIG_DECNET_NF_GRABULATOR=m
|
||||
CONFIG_BRIDGE_NF_EBTABLES=m
|
||||
CONFIG_BRIDGE_EBT_BROUTE=m
|
||||
CONFIG_BRIDGE_EBT_T_FILTER=m
|
||||
|
|
@ -147,7 +146,6 @@ CONFIG_ATM_MPOA=m
|
|||
CONFIG_ATM_BR2684=m
|
||||
CONFIG_BRIDGE=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_LLC2=m
|
||||
CONFIG_ATALK=m
|
||||
CONFIG_DEV_APPLETALK=m
|
||||
|
|
|
|||
|
|
@ -200,7 +200,6 @@ CONFIG_IP6_NF_TARGET_REJECT=m
|
|||
CONFIG_IP6_NF_MANGLE=m
|
||||
CONFIG_IP6_NF_RAW=m
|
||||
CONFIG_IP6_NF_SECURITY=m
|
||||
CONFIG_DECNET_NF_GRABULATOR=m
|
||||
CONFIG_BRIDGE_NF_EBTABLES=m
|
||||
CONFIG_BRIDGE_EBT_BROUTE=m
|
||||
CONFIG_BRIDGE_EBT_T_FILTER=m
|
||||
|
|
@ -234,7 +233,6 @@ CONFIG_ATM_BR2684=m
|
|||
CONFIG_BRIDGE=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_VLAN_8021Q_GVRP=y
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_LLC2=m
|
||||
CONFIG_ATALK=m
|
||||
CONFIG_DEV_APPLETALK=m
|
||||
|
|
|
|||
|
|
@ -198,7 +198,6 @@ CONFIG_IP6_NF_TARGET_REJECT=m
|
|||
CONFIG_IP6_NF_MANGLE=m
|
||||
CONFIG_IP6_NF_RAW=m
|
||||
CONFIG_IP6_NF_SECURITY=m
|
||||
CONFIG_DECNET_NF_GRABULATOR=m
|
||||
CONFIG_BRIDGE_NF_EBTABLES=m
|
||||
CONFIG_BRIDGE_EBT_BROUTE=m
|
||||
CONFIG_BRIDGE_EBT_T_FILTER=m
|
||||
|
|
@ -232,7 +231,6 @@ CONFIG_ATM_BR2684=m
|
|||
CONFIG_BRIDGE=m
|
||||
CONFIG_VLAN_8021Q=m
|
||||
CONFIG_VLAN_8021Q_GVRP=y
|
||||
CONFIG_DECNET=m
|
||||
CONFIG_LLC2=m
|
||||
CONFIG_ATALK=m
|
||||
CONFIG_DEV_APPLETALK=m
|
||||
|
|
|
|||
Some files were not shown because too many files have changed in this diff Show more
Loading…
Reference in a new issue