[PATCH 2/8] KVM: x86 emulator: use aligned variants of SSE register ops
From: Mathias Krause <hidden>
Date: 2012-08-29 23:32:19
Also in:
lkml
Subsystem:
kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Sean Christopherson, Paolo Bonzini, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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: Mathias Krause <redacted> --- arch/x86/kvm/emulate.c | 64 ++++++++++++++++++++++++------------------------ 1 file changed, 32 insertions(+), 32 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 1451cff..5a0fee1 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c@@ -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(); }
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1.7.10.4