diff options
| author | Thomas Prescher <thomas.prescher@cyberus-technology.de> | 2023-12-12 10:59:37 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-02-07 13:16:11 -0800 |
| commit | 03f6298c7cf6d2c1ccd0961ab9b340502d63840a (patch) | |
| tree | f6e80bb340758db4b4d9fe449fb83e54826fcbc4 | |
| parent | e1dda3afe2a9f466940d44db8baaaf6c0ff8793f (diff) | |
| download | linux-stable-03f6298c7cf6d2c1ccd0961ab9b340502d63840a.tar.gz linux-stable-03f6298c7cf6d2c1ccd0961ab9b340502d63840a.tar.bz2 linux-stable-03f6298c7cf6d2c1ccd0961ab9b340502d63840a.zip | |
KVM: x86/emulator: emulate movbe with operand-size prefix
The MOVBE instruction can come with an operand-size prefix (66h). In
this, case the x86 emulation code returns EMULATION_FAILED.
It turns out that em_movbe can already handle this case and all that
is missing is an entry in respective opcode tables to populate
gprefix->pfx_66.
Signed-off-by: Thomas Prescher <thomas.prescher@cyberus-technology.de>
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231212095938.26731-1-julian.stecklina@cyberus-technology.de
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/emulate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index e223043ef5b2..c75924f4f737 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -4505,11 +4505,11 @@ static const struct instr_dual instr_dual_0f_38_f1 = { }; static const struct gprefix three_byte_0f_38_f0 = { - ID(0, &instr_dual_0f_38_f0), N, N, N + ID(0, &instr_dual_0f_38_f0), ID(0, &instr_dual_0f_38_f0), N, N }; static const struct gprefix three_byte_0f_38_f1 = { - ID(0, &instr_dual_0f_38_f1), N, N, N + ID(0, &instr_dual_0f_38_f1), ID(0, &instr_dual_0f_38_f1), N, N }; /* |