From: Stefan Fritsch <sf@sfritsch.de>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Stefan Fritsch <sf@sfritsch.de>
Subject: [PATCH] kvm: Add emulation for movups/movupd
Date: Sun, 1 Apr 2018 17:54:44 +0200 [thread overview]
Message-ID: <20180401155444.7006-1-sf@sfritsch.de> (raw)
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@genua.de>
Signed-off-by: Stefan Fritsch <sf@sfritsch.de>
---
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 d91eaeb01034..7dda8e38c19a 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4498,6 +4498,10 @@ 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,
};
@@ -4709,7 +4713,9 @@ 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 */
--
2.11.0
next reply other threads:[~2018-04-01 15:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-01 15:54 Stefan Fritsch [this message]
2018-04-03 19:44 ` [PATCH] kvm: Add emulation for movups/movupd Radim Krčmář
2018-04-04 15:53 ` Paolo Bonzini
2018-04-04 17:10 ` Konrad Rzeszutek Wilk
2018-04-04 17:24 ` Paolo Bonzini
2018-04-04 17:35 ` Stefan Fritsch
2018-04-05 5:44 ` Paolo Bonzini
2021-01-12 23:47 ` Jim Mattson
2021-01-15 8:56 ` Stefan Fritsch
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