| From | Ingo Molnar <> | Subject | [PATCH 002/208] x86/fpu: Add comments to fpu__save() and restrict its export | Date | Tue, 5 May 2015 18:23:42 +0200 |
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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: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/i387.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
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; -- 2.1.0
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