[B][SRU][PATCH 1/1] kvm: Add emulation for movups/movupd

[Po-Hsu Lin]

From: Stefan Fritsch <sf at sfritsch.de>

BugLink: https://bugs.launchpad.net/bugs/1932966

This is very similar to the aligned versions movaps/movapd.

We have seen the corresponding emulation failures with openbsd as guest
and with Windows 10 with intel HD graphics pass through.

Signed-off-by: Christian Ehrhardt <christian_ehrhardt at genua.de>
Signed-off-by: Stefan Fritsch <sf at sfritsch.de>
Reviewed-by: Radim Krčmář <rkrcmar at redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
(cherry picked from commit 29916968c48691c94be466a0b47cc9adcea9cb8d)
Signed-off-by: Po-Hsu Lin <po-hsu.lin at canonical.com>
---
 arch/x86/kvm/emulate.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index c679f17..10bd3a8 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4497,6 +4497,10 @@ static const struct gprefix pfx_0f_2b = {
 	ID(0, &instr_dual_0f_2b), ID(0, &instr_dual_0f_2b), N, N,
 };
 
+static const struct gprefix pfx_0f_10_0f_11 = {
+	I(Unaligned, em_mov), I(Unaligned, em_mov), N, N,
+};
+
 static const struct gprefix pfx_0f_28_0f_29 = {
 	I(Aligned, em_mov), I(Aligned, em_mov), N, N,
 };
@@ -4708,7 +4712,9 @@ static const struct opcode twobyte_table[256] = {
 	DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N,
 	N, D(ImplicitOps | ModRM | SrcMem | NoAccess), N, N,
 	/* 0x10 - 0x1F */
-	N, N, N, N, N, N, N, N,
+	GP(ModRM | DstReg | SrcMem | Mov | Sse, &pfx_0f_10_0f_11),
+	GP(ModRM | DstMem | SrcReg | Mov | Sse, &pfx_0f_10_0f_11),
+	N, N, N, N, N, N,
 	D(ImplicitOps | ModRM | SrcMem | NoAccess),
 	N, N, N, N, N, N, D(ImplicitOps | ModRM | SrcMem | NoAccess),
 	/* 0x20 - 0x2F */
-- 
2.7.4