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KVM: x86 emulator: implement RDPMC (0F 33)

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Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity
2011-11-10 14:57:30 +02:00
parent 80bdec64c0
commit 222d21aa07
3 changed files with 20 additions and 1 deletions
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13
arch/x86/kvm/emulate.c
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@@ -2645,6 +2645,17 @@ static int em_rdtsc(struct x86_emulate_ctxt *ctxt)
return X86EMUL_CONTINUE;
}
static int em_rdpmc(struct x86_emulate_ctxt *ctxt)
{
u64 pmc;
if (ctxt->ops->read_pmc(ctxt, ctxt->regs[VCPU_REGS_RCX], &pmc))
return emulate_gp(ctxt, 0);
ctxt->regs[VCPU_REGS_RAX] = (u32)pmc;
ctxt->regs[VCPU_REGS_RDX] = pmc >> 32;
return X86EMUL_CONTINUE;
}
static int em_mov(struct x86_emulate_ctxt *ctxt)
{
ctxt->dst.val = ctxt->src.val;
@@ -3411,7 +3422,7 @@ static struct opcode twobyte_table[256] = {
II(ImplicitOps | Priv, em_wrmsr, wrmsr),
IIP(ImplicitOps, em_rdtsc, rdtsc, check_rdtsc),
II(ImplicitOps | Priv, em_rdmsr, rdmsr),
DIP(ImplicitOps, rdpmc, check_rdpmc),
IIP(ImplicitOps, em_rdpmc, rdpmc, check_rdpmc),
I(ImplicitOps | VendorSpecific, em_sysenter),
I(ImplicitOps | Priv | VendorSpecific, em_sysexit),
N, N,