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authorLinus Torvalds <torvalds@linux-foundation.org>2022-05-24 04:01:31 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-05-24 04:01:31 +0300
commitc5a3d3c01e90e74166f95eec9db6fcc3ba72a9d6 (patch)
tree3f938013952aaf28beab3e6228a4c4e5aa90badf /Documentation/x86
parent3a755ebcc2557e22b895b8976257f682c653db1d (diff)
parent2147c438fde135d6c145a96e373d9348e7076f7f (diff)
downloadlinux-c5a3d3c01e90e74166f95eec9db6fcc3ba72a9d6.tar.xz
Merge tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 CPU feature updates from Borislav Petkov: - Remove a bunch of chicken bit options to turn off CPU features which are not really needed anymore - Misc fixes and cleanups * tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Add missing prototype for unpriv_ebpf_notify() x86/pm: Fix false positive kmemleak report in msr_build_context() x86/speculation/srbds: Do not try to turn mitigation off when not supported x86/cpu: Remove "noclflush" x86/cpu: Remove "noexec" x86/cpu: Remove "nosmep" x86/cpu: Remove CONFIG_X86_SMAP and "nosmap" x86/cpu: Remove "nosep" x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid=
Diffstat (limited to 'Documentation/x86')
-rw-r--r--Documentation/x86/cpuinfo.rst5
-rw-r--r--Documentation/x86/x86_64/boot-options.rst9
2 files changed, 2 insertions, 12 deletions
diff --git a/Documentation/x86/cpuinfo.rst b/Documentation/x86/cpuinfo.rst
index 5d54c39a063f..08246e8ac835 100644
--- a/Documentation/x86/cpuinfo.rst
+++ b/Documentation/x86/cpuinfo.rst
@@ -140,9 +140,8 @@ from #define X86_FEATURE_UMIP (16*32 + 2).
In addition, there exists a variety of custom command-line parameters that
disable specific features. The list of parameters includes, but is not limited
-to, nofsgsbase, nosmap, and nosmep. 5-level paging can also be disabled using
-"no5lvl". SMAP and SMEP are disabled with the aforementioned parameters,
-respectively.
+to, nofsgsbase, nosgx, noxsave, etc. 5-level paging can also be disabled using
+"no5lvl".
e: The feature was known to be non-functional.
----------------------------------------------
diff --git a/Documentation/x86/x86_64/boot-options.rst b/Documentation/x86/x86_64/boot-options.rst
index 4efb1fa039ef..03ec9cf01181 100644
--- a/Documentation/x86/x86_64/boot-options.rst
+++ b/Documentation/x86/x86_64/boot-options.rst
@@ -157,15 +157,6 @@ Rebooting
newer BIOS, or newer board) using this option will ignore the built-in
quirk table, and use the generic default reboot actions.
-Non Executable Mappings
-=======================
-
- noexec=on|off
- on
- Enable(default)
- off
- Disable
-
NUMA
====