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| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2022-06-15 00:15:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-25 12:26:42 +0300 |
| commit | dabc2a1b406ae0ff5286c91f7519b3e20ec2aa63 (patch) | |
| tree | 0feb9941c9b76da31378be66328c19037d48fc21 /Documentation | |
| parent | 6d7e13ccc4d73e5c88cc015bc0154b7d08f65038 (diff) | |
| download | linux-dabc2a1b406ae0ff5286c91f7519b3e20ec2aa63.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: Ben Hutchings <ben@decadent.org.uk>
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 15ca7a41f585..2e3b495c13ce 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5026,6 +5026,7 @@ 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. |