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| author |   Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2022-06-14 23:15:55 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-06-27 10:33:59 +0200 |
| commit | 7c693f54c873691a4b7da05c7e0f74e67745d144 (patch) | |
| tree | fba33f356c8c7a3db8efd45f6fa5ed364912ebab /Documentation/admin-guide | |
| parent | x86/bugs: Optimize SPEC_CTRL MSR writes (diff) | |
| download | linux-dev-7c693f54c873691a4b7da05c7e0f74e67745d144.tar.xz linux-dev-7c693f54c873691a4b7da05c7e0f74e67745d144.zip | |
x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
Extend spectre_v2= boot option with Kernel IBRS.
[jpoimboe: no STIBP with IBRS]
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 168e164f09eb..0aeea69e9b7a 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5589,6 +5589,7 @@ eibrs - enhanced IBRS eibrs,retpoline - enhanced IBRS + Retpolines eibrs,lfence - enhanced IBRS + LFENCE + ibrs - use IBRS to protect kernel Not specifying this option is equivalent to spectre_v2=auto. |