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Linux kernel for uConsole
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Jason Wang 0e2af9b06c vhost_net: disable zerocopy by default 
[ Upstream commit 098eadce3c ]

Vhost_net was known to suffer from HOL[1] issues which is not easy to
fix. Several downstream disable the feature by default. What's more,
the datapath was split and datacopy path got the support of batching
and XDP support recently which makes it faster than zerocopy part for
small packets transmission.

It looks to me that disable zerocopy by default is more
appropriate. It cold be enabled by default again in the future if we
fix the above issues.

[1] https://patchwork.kernel.org/patch/3787671/

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-07-26 09:14:08 +02:00
arch x86/atomic: Fix smp_mb__{before,after}_atomic() 2019-07-26 09:14:08 +02:00
block block, bfq: NULL out the bic when it's no longer valid 2019-07-14 08:11:17 +02:00
certs
crypto crypto: cryptd - Fix skcipher instance memory leak 2019-07-10 09:53:41 +02:00
Documentation x86/atomic: Fix smp_mb__{before,after}_atomic() 2019-07-26 09:14:08 +02:00
drivers vhost_net: disable zerocopy by default 2019-07-26 09:14:08 +02:00
firmware
fs blkcg, writeback: dead memcgs shouldn't contribute to writeback ownership arbitration 2019-07-26 09:14:08 +02:00
include rcu: Force inlining of rcu_read_lock() 2019-07-26 09:14:07 +02:00
init initramfs: free initrd memory if opening /initrd.image fails 2019-06-15 11:54:01 +02:00
ipc ipc: prevent lockup on alloc_msg and free_msg 2019-06-15 11:54:00 +02:00
kernel sched/fair: Fix "runnable_avg_yN_inv" not used warnings 2019-07-26 09:14:08 +02:00
lib lib/mpi: Fix karactx leak in mpi_powm 2019-07-10 09:53:42 +02:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm/vmscan.c: prevent useless kswapd loops 2019-07-10 09:53:44 +02:00
net xfrm: fix sa selector validation 2019-07-26 09:14:08 +02:00
samples samples, bpf: suppress compiler warning 2019-07-14 08:11:04 +02:00
scripts scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE 2019-07-10 09:53:39 +02:00
security selinux: fix empty write to keycreate file 2019-07-26 09:14:07 +02:00
sound ASoC: meson: axg-tdm: fix sample clock inversion 2019-07-26 09:14:07 +02:00
tools perf evsel: Make perf_evsel__name() accept a NULL argument 2019-07-26 09:14:08 +02:00
usr
virt KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy 2019-07-14 08:11:10 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS platform/x86: Add Intel AtomISP2 dummy / power-management driver 2019-04-20 09:16:02 +02:00
Makefile Linux 4.19.60 2019-07-21 09:03:18 +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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.