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Lines 11-16
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| 11 |
#include <linux/config.h> |
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#include <linux/config.h> |
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#include <linux/sched.h> |
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#include <linux/sched.h> |
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#include <linux/init.h> |
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#include <linux/init.h> |
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#include <linux/kernel_stat.h> |
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#include <asm/processor.h> |
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#include <asm/processor.h> |
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#include <asm/i387.h> |
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#include <asm/i387.h> |
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#include <asm/math_emu.h> |
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#include <asm/math_emu.h> |
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Lines 70-77
void init_fpu(void)
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| 70 |
static inline void __save_init_fpu( struct task_struct *tsk ) |
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static inline void __save_init_fpu( struct task_struct *tsk ) |
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{ |
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{ |
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if ( cpu_has_fxsr ) { |
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if ( cpu_has_fxsr ) { |
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asm volatile( "fxsave %0 ; fnclex" |
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asm volatile( "fxsave %0" |
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: "=m" (tsk->thread.i387.fxsave) ); |
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: "=m" (tsk->thread.i387.fxsave) ); |
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if (tsk->thread.i387.fxsave.swd & (1<<7)) |
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asm volatile("fnclex"); |
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/* AMD CPUs leak F?P. Clear it here */ |
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asm volatile("ffree %%st(7) ; fildl %0" :: "m" (kstat.context_swtch)); |
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} else { |
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} else { |
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asm volatile( "fnsave %0 ; fwait" |
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asm volatile( "fnsave %0 ; fwait" |
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: "=m" (tsk->thread.i387.fsave) ); |
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: "=m" (tsk->thread.i387.fsave) ); |
