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KVM: x86 emulator: simplify REX.W check
author
Avi Kivity
<avi@redhat.com>
Sun, 1 Aug 2010 11:42:51 +0000
(14:42 +0300)
committer
Avi Kivity
<avi@redhat.com>
Sun, 24 Oct 2010 08:50:34 +0000
(10:50 +0200)
(x && (x & y)) == (x & y)
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/emulate.c
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diff --git
a/arch/x86/kvm/emulate.c
b/arch/x86/kvm/emulate.c
index
7d2c715
..
a832019
100644
(file)
--- a/
arch/x86/kvm/emulate.c
+++ b/
arch/x86/kvm/emulate.c
@@
-2358,9
+2358,8
@@
x86_decode_insn(struct x86_emulate_ctxt *ctxt)
done_prefixes:
/* REX prefix. */
- if (c->rex_prefix)
- if (c->rex_prefix & 8)
- c->op_bytes = 8; /* REX.W */
+ if (c->rex_prefix & 8)
+ c->op_bytes = 8; /* REX.W */
/* Opcode byte(s). */
opcode = opcode_table[c->b];