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author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2022-10-03 16:10:15 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-07 10:16:55 +0300 |
commit | 2d4ce2d72c3b46f20929fa7d1c8af5d5250ccfc7 (patch) | |
tree | 6c6ecbc5ca47795a1c0d84da5996a9f96d9e1652 /Documentation | |
parent | e2d793a3742a2502533ee586a3f9151670e3f467 (diff) | |
download | linux-2d4ce2d72c3b46f20929fa7d1c8af5d5250ccfc7.tar.xz |
x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
commit 7c693f54c873691a4b7da05c7e0f74e67745d144 upstream.
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>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-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 e0fb1e5e5113..8f71a17ad544 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4553,6 +4553,7 @@ 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. |