From: Gleb Natapov <gleb@redhat.com>
To: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, avi@redhat.com,
mtosatti@redhat.com, mingo@elte.hu, a.p.zijlstra@chello.nl,
acme@ghostprotocols.net
Subject: [PATCHv3 10/10] KVM: x86 emulator: implement RDPMC (0F 33)
Date: Thu, 10 Nov 2011 14:57:30 +0200 [thread overview]
Message-ID: <1320929850-10480-11-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1320929850-10480-1-git-send-email-gleb@redhat.com>
From: Avi Kivity <avi@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
arch/x86/include/asm/kvm_emulate.h | 1 +
arch/x86/kvm/emulate.c | 13 ++++++++++++-
arch/x86/kvm/x86.c | 7 +++++++
3 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index 9a4acf4..ab4092e 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -181,6 +181,7 @@ struct x86_emulate_ops {
int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value);
int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data);
int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata);
+ int (*read_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc, u64 *pdata);
void (*halt)(struct x86_emulate_ctxt *ctxt);
void (*wbinvd)(struct x86_emulate_ctxt *ctxt);
int (*fix_hypercall)(struct x86_emulate_ctxt *ctxt);
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index c0ee85b..d76a852 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2623,6 +2623,17 @@ 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;
@@ -3254,7 +3265,7 @@ static struct opcode twobyte_table[256] = {
DI(ImplicitOps | Priv, wrmsr),
IIP(ImplicitOps, em_rdtsc, rdtsc, check_rdtsc),
DI(ImplicitOps | Priv, 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,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2c44b05..f78b48c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4662,6 +4662,12 @@ static int emulator_set_msr(struct x86_emulate_ctxt *ctxt,
return kvm_set_msr(emul_to_vcpu(ctxt), msr_index, data);
}
+static int emulator_read_pmc(struct x86_emulate_ctxt *ctxt,
+ u32 pmc, u64 *pdata)
+{
+ return kvm_pmu_read_pmc(emul_to_vcpu(ctxt), pmc, pdata);
+}
+
static void emulator_halt(struct x86_emulate_ctxt *ctxt)
{
emul_to_vcpu(ctxt)->arch.halt_request = 1;
@@ -4714,6 +4720,7 @@ static struct x86_emulate_ops emulate_ops = {
.set_dr = emulator_set_dr,
.set_msr = emulator_set_msr,
.get_msr = emulator_get_msr,
+ .read_pmc = emulator_read_pmc,
.halt = emulator_halt,
.wbinvd = emulator_wbinvd,
.fix_hypercall = emulator_fix_hypercall,
--
1.7.7.1
next prev parent reply other threads:[~2011-11-10 12:59 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 12:57 [PATCHv3 00/10] KVM in-guest performance monitoring Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 01/10] KVM: Expose kvm_lapic_local_deliver() Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 02/10] KVM: Expose a version 2 architectural PMU to a guests Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 03/10] KVM: Add generic RDPMC support Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 04/10] KVM: SVM: Intercept RDPMC Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 05/10] KVM: VMX: " Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 06/10] x86, perf: disable non available architectural events Gleb Natapov
2011-11-17 9:29 ` Peter Zijlstra
2011-12-06 20:17 ` [tip:perf/core] x86, perf: Disable " tip-bot for Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 07/10] perf, x86: expose perf capability to other modules Gleb Natapov
2011-12-06 20:18 ` [tip:perf/core] perf, x86: Expose " tip-bot for Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 08/10] KVM: Expose the architectural performance monitoring CPUID leaf Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 09/10] KVM: x86 emulator: fix RDPMC privilege check Gleb Natapov
2011-11-10 12:57 ` Gleb Natapov [this message]
2011-11-17 9:30 ` [PATCHv3 00/10] KVM in-guest performance monitoring Peter Zijlstra
2011-12-11 14:05 ` Avi Kivity
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