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Filename Latest commit message Latest commit date
Alexandru Elisei 3884294986 KVM: arm64: Annotate hyp NMI-related functions as __always_inline 
commit 7733306bd593c737c63110175da6c35b4b8bb32c upstream.

The "inline" keyword is a hint for the compiler to inline a function.  The
functions system_uses_irq_prio_masking() and gic_write_pmr() are used by
the code running at EL2 on a non-VHE system, so mark them as
__always_inline to make sure they'll always be part of the .hyp.text
section.

This fixes the following splat when trying to run a VM:

[   47.625273] Kernel panic - not syncing: HYP panic:
[   47.625273] PS:a00003c9 PC:0000ca0b42049fc4 ESR:86000006
[   47.625273] FAR:0000ca0b42049fc4 HPFAR:0000000010001000 PAR:0000000000000000
[   47.625273] VCPU:0000000000000000
[   47.647261] CPU: 1 PID: 217 Comm: kvm-vcpu-0 Not tainted 5.8.0-rc1-ARCH+ #61
[   47.654508] Hardware name: Globalscale Marvell ESPRESSOBin Board (DT)
[   47.661139] Call trace:
[   47.663659]  dump_backtrace+0x0/0x1cc
[   47.667413]  show_stack+0x18/0x24
[   47.670822]  dump_stack+0xb8/0x108
[   47.674312]  panic+0x124/0x2f4
[   47.677446]  panic+0x0/0x2f4
[   47.680407] SMP: stopping secondary CPUs
[   47.684439] Kernel Offset: disabled
[   47.688018] CPU features: 0x240402,20002008
[   47.692318] Memory Limit: none
[   47.695465] ---[ end Kernel panic - not syncing: HYP panic:
[   47.695465] PS:a00003c9 PC:0000ca0b42049fc4 ESR:86000006
[   47.695465] FAR:0000ca0b42049fc4 HPFAR:0000000010001000 PAR:0000000000000000
[   47.695465] VCPU:0000000000000000 ]---

The instruction abort was caused by the code running at EL2 trying to fetch
an instruction which wasn't mapped in the EL2 translation tables. Using
objdump showed the two functions as separate symbols in the .text section.

Fixes: 85738e05dc ("arm64: kvm: Unmask PMR before entering guest")
Cc: stable@vger.kernel.org
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200618171254.1596055-1-alexandru.elisei@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-16 08:16:43 +02:00
arch KVM: arm64: Annotate hyp NMI-related functions as __always_inline 2020-07-16 08:16:43 +02:00
block block: release bip in a right way in error path 2020-07-16 08:16:36 +02:00
certs
crypto crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() 2020-07-09 09:37:52 +02:00
Documentation dt-bindings: display: mediatek: control dpi pins mode to avoid leakage 2020-06-22 09:30:58 +02:00
drivers IB/hfi1: Do not destroy link_wq when the device is shut down 2020-07-16 08:16:42 +02:00
fs cifs: update ctime and mtime during truncate 2020-07-16 08:16:35 +02:00
include ALSA: compress: fix partial_drain completion state 2020-07-16 08:16:39 +02:00
init x86: Fix early boot crash on gcc-10, third try 2020-05-20 08:20:34 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel sched/core: Check cpus_mask, not cpus_ptr in __set_cpus_allowed_ptr(), to fix mask corruption 2020-07-16 08:16:36 +02:00
lib test_objagg: Fix potential memory leak in error handling 2020-06-30 15:37:04 -04:00
LICENSES
mm mm, compaction: make capture control handling safe wrt interrupts 2020-07-09 09:37:57 +02:00
net netfilter: conntrack: refetch conntrack after nf_conntrack_update() 2020-07-16 08:16:38 +02:00
samples samples/vfs: avoid warning in statx override 2020-07-09 09:37:54 +02:00
scripts recordmcount: support >64k sections 2020-06-30 15:37:05 -04:00
security selinux: fix double free 2020-06-24 17:50:48 +02:00
sound ALSA: hda/realtek: Enable headset mic of Acer Veriton N4660G with ALC269VC 2020-07-16 08:16:43 +02:00
tools perf intel-pt: Fix PEBS sample for XMM registers 2020-07-16 08:16:39 +02:00
usr
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.51 2020-07-09 09:37:57 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.