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Filename Latest commit message Latest commit date
Liran Alon c2ae3ce351 net: Google gve: Remove dma_wmb() before ringing doorbell 
[ Upstream commit b54ef37b1ce892fdf6b632d566246d2f2f539910 ]

Current code use dma_wmb() to ensure Rx/Tx descriptors are visible
to device before writing to doorbell.

However, these dma_wmb() are wrong and unnecessary. Therefore,
they should be removed.

iowrite32be() called from gve_rx_write_doorbell()/gve_tx_put_doorbell()
should guaratee that all previous writes to WB/UC memory is visible to
device before the write done by iowrite32be().

E.g. On ARM64, iowrite32be() calls __iowmb() which expands to dma_wmb()
and only then calls __raw_writel().

Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-01 09:34:44 +00:00
arch arc: eznps: fix allmodconfig kconfig warning 2020-02-01 09:34:40 +00:00
block block: fix memleak of bio integrity data 2020-01-26 10:01:09 +01:00
certs
crypto
Documentation hwrng: omap3-rom - Fix missing clock by probing with device tree 2020-01-26 10:01:03 +01:00
drivers net: Google gve: Remove dma_wmb() before ringing doorbell 2020-02-01 09:34:44 +00:00
fs cifs: Fix memory allocation in __smb2_handle_cancelled_cmd() 2020-02-01 09:34:37 +00:00
include udp: segment looped gso packets correctly 2020-02-01 09:34:39 +00:00
init
ipc
kernel tracing: Fix histogram code when expression has same var as value 2020-01-29 16:45:26 +01:00
lib lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-29 16:45:29 +01:00
LICENSES
mm
net rxrpc: Fix use-after-free in rxrpc_receive_data() 2020-02-01 09:34:40 +00:00
samples samples/bpf: Fix broken xdp_rxq_info due to map order assumptions 2020-01-26 10:00:58 +01:00
scripts ARM: 8950/1: ftrace/recordmcount: filter relocation types 2020-01-29 16:45:27 +01:00
security
sound ASoC: topology: Prevent use-after-free in snd_soc_get_pcm_runtime() 2020-02-01 09:34:42 +00:00
tools kselftests: cgroup: Avoid the reuse of fd after it is deallocated 2020-01-26 10:01:07 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
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Makefile Linux 5.4.16 2020-01-29 16:45:34 +01:00
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.