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| author | Ingo Molnar <mingo@kernel.org> | 2015-04-25 06:26:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 15:47:39 +0200 |
| commit | 55cc4678b7ee2edd3e6a9411250530eb871bc61d (patch) | |
| tree | 844b60e7dce138ac0f5e83e68dc4e6cc77eb2a9d /arch/x86/include/asm/fpu/internal.h | |
| parent | e35f6f14148c09ad534d122ed32722dd431ac184 (diff) | |
| download | lwn-55cc4678b7ee2edd3e6a9411250530eb871bc61d.tar.gz lwn-55cc4678b7ee2edd3e6a9411250530eb871bc61d.zip | |
x86/fpu: Make the system/cpu init distinction clear in the xstate code as well
Rename existing xstate init functions along the system/cpu init principles:
fpu__init_system_xstate(): called once per system bootup
fpu__init_cpu_xstate(): called per CPU onlining
Also make the fpu__init_cpu_xstate() early code invariant:
if xfeatures_mask is not set yet then don't crash but return.
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/fpu/internal.h')
| -rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 19b7cdf73efd..71d44be5acb1 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -39,6 +39,9 @@ extern unsigned int mxcsr_feature_mask; extern void fpu__cpu_init(void); extern void eager_fpu_init(void); +extern void fpu__init_system_xstate(void); +extern void fpu__init_cpu_xstate(void); + DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx); extern void convert_from_fxsr(struct user_i387_ia32_struct *env, |