diff options
| 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 /arch/x86/include | |
| 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 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/nospec-branch.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index b6abf0c6b41d..e14046daa7ba 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -211,6 +211,7 @@ enum spectre_v2_mitigation { SPECTRE_V2_EIBRS, SPECTRE_V2_EIBRS_RETPOLINE, SPECTRE_V2_EIBRS_LFENCE, + SPECTRE_V2_IBRS, }; /* The indirect branch speculation control variants */ |