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Commit 89a87c67 authored by Mathias Krause's avatar Mathias Krause Committed by Avi Kivity
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KVM: x86 emulator: use aligned variants of SSE register ops 



As the the compiler ensures that the memory operand is always aligned
to a 16 byte memory location, use the aligned variant of MOVDQ for
read_sse_reg() and write_sse_reg().

Signed-off-by: default avatarMathias Krause <minipli@googlemail.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 326d07cb

arch/x86/kvm/emulate.c

+32 −32
Original line number Diff line number Diff line
@@ -909,23 +909,23 @@ static void read_sse_reg(struct x86_emulate_ctxt *ctxt, sse128_t *data, int reg) 
{

	ctxt->ops->get_fpu(ctxt);

	switch (reg) {

	case 0: asm("movdqu %%xmm0, %0" : "=m"(*data)); break;

	case 1: asm("movdqu %%xmm1, %0" : "=m"(*data)); break;

	case 2: asm("movdqu %%xmm2, %0" : "=m"(*data)); break;

	case 3: asm("movdqu %%xmm3, %0" : "=m"(*data)); break;

	case 4: asm("movdqu %%xmm4, %0" : "=m"(*data)); break;

	case 5: asm("movdqu %%xmm5, %0" : "=m"(*data)); break;

	case 6: asm("movdqu %%xmm6, %0" : "=m"(*data)); break;

	case 7: asm("movdqu %%xmm7, %0" : "=m"(*data)); break;

	case 0: asm("movdqa %%xmm0, %0" : "=m"(*data)); break;

	case 1: asm("movdqa %%xmm1, %0" : "=m"(*data)); break;

	case 2: asm("movdqa %%xmm2, %0" : "=m"(*data)); break;

	case 3: asm("movdqa %%xmm3, %0" : "=m"(*data)); break;

	case 4: asm("movdqa %%xmm4, %0" : "=m"(*data)); break;

	case 5: asm("movdqa %%xmm5, %0" : "=m"(*data)); break;

	case 6: asm("movdqa %%xmm6, %0" : "=m"(*data)); break;

	case 7: asm("movdqa %%xmm7, %0" : "=m"(*data)); break;

#ifdef CONFIG_X86_64

	case 8: asm("movdqu %%xmm8, %0" : "=m"(*data)); break;

	case 9: asm("movdqu %%xmm9, %0" : "=m"(*data)); break;

	case 10: asm("movdqu %%xmm10, %0" : "=m"(*data)); break;

	case 11: asm("movdqu %%xmm11, %0" : "=m"(*data)); break;

	case 12: asm("movdqu %%xmm12, %0" : "=m"(*data)); break;

	case 13: asm("movdqu %%xmm13, %0" : "=m"(*data)); break;

	case 14: asm("movdqu %%xmm14, %0" : "=m"(*data)); break;

	case 15: asm("movdqu %%xmm15, %0" : "=m"(*data)); break;

	case 8: asm("movdqa %%xmm8, %0" : "=m"(*data)); break;

	case 9: asm("movdqa %%xmm9, %0" : "=m"(*data)); break;

	case 10: asm("movdqa %%xmm10, %0" : "=m"(*data)); break;

	case 11: asm("movdqa %%xmm11, %0" : "=m"(*data)); break;

	case 12: asm("movdqa %%xmm12, %0" : "=m"(*data)); break;

	case 13: asm("movdqa %%xmm13, %0" : "=m"(*data)); break;

	case 14: asm("movdqa %%xmm14, %0" : "=m"(*data)); break;

	case 15: asm("movdqa %%xmm15, %0" : "=m"(*data)); break;

#endif

	default: BUG();

	}
@@ -937,23 +937,23 @@ static void write_sse_reg(struct x86_emulate_ctxt *ctxt, sse128_t *data, 
{

	ctxt->ops->get_fpu(ctxt);

	switch (reg) {

	case 0: asm("movdqu %0, %%xmm0" : : "m"(*data)); break;

	case 1: asm("movdqu %0, %%xmm1" : : "m"(*data)); break;

	case 2: asm("movdqu %0, %%xmm2" : : "m"(*data)); break;

	case 3: asm("movdqu %0, %%xmm3" : : "m"(*data)); break;

	case 4: asm("movdqu %0, %%xmm4" : : "m"(*data)); break;

	case 5: asm("movdqu %0, %%xmm5" : : "m"(*data)); break;

	case 6: asm("movdqu %0, %%xmm6" : : "m"(*data)); break;

	case 7: asm("movdqu %0, %%xmm7" : : "m"(*data)); break;

	case 0: asm("movdqa %0, %%xmm0" : : "m"(*data)); break;

	case 1: asm("movdqa %0, %%xmm1" : : "m"(*data)); break;

	case 2: asm("movdqa %0, %%xmm2" : : "m"(*data)); break;

	case 3: asm("movdqa %0, %%xmm3" : : "m"(*data)); break;

	case 4: asm("movdqa %0, %%xmm4" : : "m"(*data)); break;

	case 5: asm("movdqa %0, %%xmm5" : : "m"(*data)); break;

	case 6: asm("movdqa %0, %%xmm6" : : "m"(*data)); break;

	case 7: asm("movdqa %0, %%xmm7" : : "m"(*data)); break;

#ifdef CONFIG_X86_64

	case 8: asm("movdqu %0, %%xmm8" : : "m"(*data)); break;

	case 9: asm("movdqu %0, %%xmm9" : : "m"(*data)); break;

	case 10: asm("movdqu %0, %%xmm10" : : "m"(*data)); break;

	case 11: asm("movdqu %0, %%xmm11" : : "m"(*data)); break;

	case 12: asm("movdqu %0, %%xmm12" : : "m"(*data)); break;

	case 13: asm("movdqu %0, %%xmm13" : : "m"(*data)); break;

	case 14: asm("movdqu %0, %%xmm14" : : "m"(*data)); break;

	case 15: asm("movdqu %0, %%xmm15" : : "m"(*data)); break;

	case 8: asm("movdqa %0, %%xmm8" : : "m"(*data)); break;

	case 9: asm("movdqa %0, %%xmm9" : : "m"(*data)); break;

	case 10: asm("movdqa %0, %%xmm10" : : "m"(*data)); break;

	case 11: asm("movdqa %0, %%xmm11" : : "m"(*data)); break;

	case 12: asm("movdqa %0, %%xmm12" : : "m"(*data)); break;

	case 13: asm("movdqa %0, %%xmm13" : : "m"(*data)); break;

	case 14: asm("movdqa %0, %%xmm14" : : "m"(*data)); break;

	case 15: asm("movdqa %0, %%xmm15" : : "m"(*data)); break;

#endif

	default: BUG();

	}