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Filename Latest commit message Latest commit date
Zhenyu Wang 1222b25765 drm/i915/gvt: Fix kernel oops for 3-level ppgtt guest 
[ Upstream commit 72a7a9925e2beea09b109dffb3384c9bf920d9da ]

As i915 won't allocate extra PDP for current default PML4 table,
so for 3-level ppgtt guest, we would hit kernel pointer access
failure on extra PDP pointers. So this trys to bypass that now.
It won't impact real shadow PPGTT setup, so guest context still
works.

This is verified on 4.15 guest kernel with i915.enable_ppgtt=1
to force on old aliasing ppgtt behavior.

Fixes: 4f15665ccb ("drm/i915: Add ppgtt to GVT GEM context")
Reviewed-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200506095918.124913-1-zhenyuw@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-05-20 08:20:24 +02:00
arch riscv: fix vdso build with lld 2020-05-20 08:20:13 +02:00
block iocost: protect iocg->abs_vdebt with iocg->waitq.lock 2020-05-14 07:58:27 +02:00
certs
crypto
Documentation
drivers drm/i915/gvt: Fix kernel oops for 3-level ppgtt guest 2020-05-20 08:20:24 +02:00
fs NFSv4: Fix fscache cookie aux_data to ensure change_attr is included 2020-05-20 08:20:23 +02:00
include netfilter: conntrack: avoid gcc-10 zero-length-bounds warning 2020-05-20 08:20:23 +02:00
init
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel fork: prevent accidental access to clone3 features 2020-05-20 08:20:22 +02:00
lib lib: devres: add a helper function for ioremap_uc 2020-05-10 10:31:30 +02:00
LICENSES
mm shmem: fix possible deadlocks on shmlock_user_lock 2020-05-20 08:20:03 +02:00
net netfilter: conntrack: avoid gcc-10 zero-length-bounds warning 2020-05-20 08:20:23 +02:00
samples
scripts scripts/decodecode: fix trapping instruction formatting 2020-05-14 07:58:29 +02:00
security
sound ALSA: firewire-lib: fix 'function sizeof not defined' error of tracepoints format 2020-05-20 08:20:19 +02:00
tools selftests/ftrace: Check the first record for kprobe_args_type.tc 2020-05-20 08:20:14 +02:00
usr
virt KVM: arm: vgic: Synchronize the whole guest on GIC{D,R}_I{S,C}ACTIVER read 2020-05-20 08:20:04 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.41 2020-05-14 07:58:30 +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.