From: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
This is needed in order to be able to support guest code that uses movss to
write into pages that are marked for write tracking.
Signed-off-by: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 9d38f892beea..b8a412b8b087 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1184,9 +1184,13 @@ static u8 simd_prefix_to_bytes(const struct x86_emulate_ctxt *ctxt,
switch (ctxt->b) {
case 0x11:
+ /* movss xmm, m32 */
/* movsd xmm, m64 */
/* movups xmm, m128 */
- if (simd_prefix == 0xf2) {
+ if (simd_prefix == 0xf3) {
+ bytes = 4;
+ break;
+ } else if (simd_prefix == 0xf2) {
bytes = 8;
break;
}
@@ -4550,7 +4554,7 @@ static const struct gprefix pfx_0f_2b = {
};
static const struct gprefix pfx_0f_10_0f_11 = {
- I(Unaligned, em_mov), I(Unaligned, em_mov), I(Unaligned, em_mov), N,
+ I(Unaligned, em_mov), I(Unaligned, em_mov), I(Unaligned, em_mov), I(Unaligned, em_mov),
};
static const struct gprefix pfx_0f_28_0f_29 = {
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