No description
  • C 96.8%
  • Assembly 0.9%
  • Rust 0.7%
  • Shell 0.6%
  • Python 0.5%
  • Other 0.3%
Find a file
Sean Christopherson ffced89220 KVM: x86/mmu: Exempt nested EPT page tables from !USER, CR0.WP=0 logic
Exempt nested EPT shadow pages tables from the CR0.WP=0 handling of
supervisor writes, as EPT doesn't have a U/S bit and isn't affected by
CR0.WP (or CR4.SMEP in the exception to the exception).

Opportunistically refresh the comment to explain what KVM is doing, as
the only record of why KVM shoves in WRITE and drops USER is buried in
years-old changelogs.

Cc: Jon Kohler <jon@nutanix.com>
Cc: Sergey Dyasli <sergey.dyasli@nutanix.com>
Reviewed-by: Jon Kohler <jon@nutanix.com>
Reviewed-by: Sergey Dyasli <sergey.dyasli@nutanix.com>
Link: https://lore.kernel.org/r/20250602234851.54573-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
History 2025-06-20 13:08:22 -07:00
arch
block
certs
crypto
Documentation
drivers
fs
include
init
io_uring
ipc
kernel
lib
LICENSES
mm
net
rust
samples
scripts
security
sound
tools
usr
virt
.clang-format
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.pylintrc
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile
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 reStructuredText 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.