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Commit 5ee481da authored by Sheng Yang's avatar Sheng Yang Committed by Avi Kivity
Browse files

x86: Export FPU API for KVM use 



Also add some constants.

Signed-off-by: default avatarSheng Yang <sheng@linux.intel.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 93736624

arch/x86/include/asm/i387.h

+2 −0
Original line number Diff line number Diff line
@@ -482,6 +482,8 @@ static inline void fpu_copy(struct fpu *dst, struct fpu *src) 
	memcpy(dst->state, src->state, xstate_size);

}



extern void fpu_finit(struct fpu *fpu);



#endif /* __ASSEMBLY__ */



#define PSHUFB_XMM5_XMM0 .byte 0x66, 0x0f, 0x38, 0x00, 0xc5

arch/x86/include/asm/xsave.h

+3 −0
Original line number Diff line number Diff line
@@ -13,6 +13,9 @@ 


#define FXSAVE_SIZE	512



#define XSTATE_YMM_SIZE 256

#define XSTATE_YMM_OFFSET (512 + 64)



/*

 * These are the features that the OS can handle currently.

 */

arch/x86/kernel/i387.c

+2 −1
Original line number Diff line number Diff line
@@ -107,7 +107,7 @@ void __cpuinit fpu_init(void) 
}

#endif	/* CONFIG_X86_64 */



static void fpu_finit(struct fpu *fpu)

void fpu_finit(struct fpu *fpu)

{

#ifdef CONFIG_X86_32

	if (!HAVE_HWFP) {
@@ -132,6 +132,7 @@ static void fpu_finit(struct fpu *fpu) 
		fp->fos = 0xffff0000u;

	}

}

EXPORT_SYMBOL_GPL(fpu_finit);



/*

 * The _current_ task is using the FPU for the first time

arch/x86/kernel/process.c

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ unsigned long idle_nomwait; 
EXPORT_SYMBOL(idle_nomwait);



struct kmem_cache *task_xstate_cachep;

EXPORT_SYMBOL_GPL(task_xstate_cachep);



int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)

{