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| author |   Borislav Petkov <bp@suse.de> | 2022-01-27 12:56:22 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-04-04 10:16:55 +0200 |
| commit | c949110ef4e31cb5d3387bd8273fd5de66b5227b (patch) | |
| tree | 0b92285edf0b2ea6d02f3a740d61e21d1fbccbd7 /arch/x86/kernel/cpu/common.c | |
| parent | x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid= (diff) | |
| download | linux-dev-c949110ef4e31cb5d3387bd8273fd5de66b5227b.tar.xz linux-dev-c949110ef4e31cb5d3387bd8273fd5de66b5227b.zip | |
x86/cpu: Remove "nosep"
That chicken bit was added by
4f88651125e2 ("[PATCH] i386: allow disabling X86_FEATURE_SEP at boot")
but measuring int80 vsyscall performance on 32-bit doesn't matter
anymore.
If still needed, one can boot with
clearcpuid=sep
to disable that feature for testing.
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220127115626.14179-3-bp@alien8.de
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 69c7ea84b005..c71d1075db93 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -298,13 +298,6 @@ static int __init cachesize_setup(char *str) } __setup("cachesize=", cachesize_setup); -static int __init x86_sep_setup(char *s) -{ - setup_clear_cpu_cap(X86_FEATURE_SEP); - return 1; -} -__setup("nosep", x86_sep_setup); - /* Standard macro to see if a specific flag is changeable */ static inline int flag_is_changeable_p(u32 flag) { |