[PATCH 01/10] KVM: emulate: add MOVNTDQA

Paolo Bonzini
2025-11-14T00:36:40Z

MOVNTDQA is a simple MOV instruction, in fact it has the same
characteristics as 0F E7 (MOVNTDQ) other than the aligned-address
requirement.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/emulate.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 4e3da5b497b8..43ae4fcb2137 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4133,7 +4133,7 @@ static const struct gprefix pfx_0f_28_0f_29 = {
I(Aligned, em_mov), I(Aligned, em_mov), N, N,
};

-static const struct gprefix pfx_0f_e7 = {
+static const struct gprefix pfx_0f_e7_0f_38_2a = {
N, I(Sse, em_mov), N, N,
};

@@ -4431,7 +4431,7 @@ static const struct opcode twobyte_table[256] = {
/* 0xD0 - 0xDF */
N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N,
/* 0xE0 - 0xEF */
- N, N, N, N, N, N, N, GP(SrcReg | DstMem | ModRM | Mov, &pfx_0f_e7),
+ N, N, N, N, N, N, N, GP(SrcReg | DstMem | ModRM | Mov, &pfx_0f_e7_0f_38_2a),
N, N, N, N, N, N, N, N,
/* 0xF0 - 0xFF */
N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N
@@ -4458,8 +4458,13 @@ static const struct gprefix three_byte_0f_38_f1 = {
* byte.
*/
static const struct opcode opcode_map_0f_38[256] = {
- /* 0x00 - 0x7f */
- X16(N), X16(N), X16(N), X16(N), X16(N), X16(N), X16(N), X16(N),
+ /* 0x00 - 0x1f */
+ X16(N), X16(N),
+ /* 0x20 - 0x2f */
+ X8(N),
+ X2(N), GP(SrcReg | DstMem | ModRM | Mov | Aligned, &pfx_0f_e7_0f_38_2a), N, N, N, N, N,
+ /* 0x30 - 0x7f */
+ X16(N), X16(N), X16(N), X16(N), X16(N),
/* 0x80 - 0xef */
X16(N), X16(N), X16(N), X16(N), X16(N), X16(N), X16(N),
/* 0xf0 - 0xf1 */
--
2.43.5