diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-04-03 11:01:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 15:47:09 +0200 |
| commit | 4af08f2f47f0ed3c48e557ac47ed2ae616d6866b (patch) | |
| tree | 97322dd1a7105af05f9df19f52788ded223be556 /arch/x86/kernel/i387.c | |
| parent | 0a7815515471a80379bfefc9f1913e0d8c87fbfb (diff) | |
x86/fpu: Add comments to fpu__save() and restrict its export
Add an explanation to fpu__save() and also don't export it to
random modules - we don't want them to futz around with deep kernel
internals.
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/kernel/i387.c')
| -rw-r--r-- | arch/x86/kernel/i387.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index ec1a744eb853..ac47278cde71 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -117,6 +117,9 @@ void __kernel_fpu_end(void) } EXPORT_SYMBOL(__kernel_fpu_end); +/* + * Save the FPU state (initialize it if necessary): + */ void fpu__save(struct task_struct *tsk) { preempt_disable(); @@ -130,7 +133,7 @@ void fpu__save(struct task_struct *tsk) } preempt_enable(); } -EXPORT_SYMBOL(fpu__save); +EXPORT_SYMBOL_GPL(fpu__save); unsigned int mxcsr_feature_mask __read_mostly = 0xffffffffu; unsigned int xstate_size; |