diff options
author | Borislav Petkov <bp@suse.de> | 2013-06-09 12:07:33 +0200 |
---|---|---|
committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-06-20 17:38:14 -0700 |
commit | 4a90a99c4f8002edaa6be11bd756872ebf3f3d97 (patch) | |
tree | 1cd36003313ca46b1d725d508d5918cf6aaac254 /arch/x86/kernel/cpu/common.c | |
parent | 5700f743b597951743da9c7d891d3989aac0486e (diff) |
x86: Add a static_cpu_has_safe variant
We want to use this in early code where alternatives might not have run
yet and for that case we fall back to the dynamic boot_cpu_has.
For that, force a 5-byte jump since the compiler could be generating
differently sized jumps for each label.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1370772454-6106-5-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
-rw-r--r-- | arch/x86/kernel/cpu/common.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 59adaa17e220..a4a07c0acb1f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1372,3 +1372,9 @@ void warn_pre_alternatives(void) } EXPORT_SYMBOL_GPL(warn_pre_alternatives); #endif + +inline bool __static_cpu_has_safe(u16 bit) +{ + return boot_cpu_has(bit); +} +EXPORT_SYMBOL_GPL(__static_cpu_has_safe); |