From 8ed1383fb7b6685968588141d5934e0e6715e954 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 22 Jul 2005 16:06:16 -0400 Subject: x86: make restore_fpu() use alternative assembler instructions It's really just a single instruction, conditional on whether the CPU supports FXSR or not, so implement it as such instead of making it a function that queries FXSR dynamically. This means that the instruction just gets automatically rewritten to the correct one at boot-time. --- arch/i386/kernel/i387.c | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/i387.c b/arch/i386/kernel/i387.c index b817168d9c62..d75524758daf 100644 --- a/arch/i386/kernel/i387.c +++ b/arch/i386/kernel/i387.c @@ -82,17 +82,6 @@ void kernel_fpu_begin(void) } EXPORT_SYMBOL_GPL(kernel_fpu_begin); -void restore_fpu( struct task_struct *tsk ) -{ - if ( cpu_has_fxsr ) { - asm volatile( "fxrstor %0" - : : "m" (tsk->thread.i387.fxsave) ); - } else { - asm volatile( "frstor %0" - : : "m" (tsk->thread.i387.fsave) ); - } -} - /* * FPU tag word conversions. */ -- cgit v1.2.2