From: Like Xu <like.xu@linux.intel.com>
To: pbonzini@redhat.com, peterz@infradead.org, kvm@vger.kernel.org
Cc: like.xu@intel.com, linux-kernel@vger.kernel.org,
jmattson@google.com, sean.j.christopherson@intel.com,
wei.w.wang@intel.com, kan.liang@intel.com
Subject: [PATCH v3 3/6] KVM: x86/vPMU: Rename pmu_ops callbacks from msr_idx to rdpmc_idx
Date: Tue, 22 Oct 2019 00:06:48 +0800 [thread overview]
Message-ID: <20191021160651.49508-4-like.xu@linux.intel.com> (raw)
In-Reply-To: <20191021160651.49508-1-like.xu@linux.intel.com>
The leagcy pmu_ops->msr_idx_to_pmc is only called in kvm_pmu_rdpmc, so
this name is restrictedly limited to rdpmc_idx which could be indexed
exactly to a kvm_pmc. Let's restrict its semantic by renaming the
existing msr_idx_to_pmc to rdpmc_idx_to_pmc, and is_valid_msr_idx to
is_valid_rdpmc_idx (likewise for kvm_pmu_is_valid_msr_idx).
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
---
arch/x86/kvm/pmu.c | 6 +++---
arch/x86/kvm/pmu.h | 8 ++++----
arch/x86/kvm/pmu_amd.c | 9 +++++----
arch/x86/kvm/vmx/pmu_intel.c | 10 +++++-----
arch/x86/kvm/x86.c | 2 +-
5 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 46875bbd0419..de362ba0df01 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -271,9 +271,9 @@ void kvm_pmu_handle_event(struct kvm_vcpu *vcpu)
}
/* check if idx is a valid index to access PMU */
-int kvm_pmu_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
+int kvm_pmu_is_valid_rdpmc_idx(struct kvm_vcpu *vcpu, unsigned int idx)
{
- return kvm_x86_ops->pmu_ops->is_valid_msr_idx(vcpu, idx);
+ return kvm_x86_ops->pmu_ops->is_valid_rdpmc_idx(vcpu, idx);
}
bool is_vmware_backdoor_pmc(u32 pmc_idx)
@@ -323,7 +323,7 @@ int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *data)
if (is_vmware_backdoor_pmc(idx))
return kvm_pmu_rdpmc_vmware(vcpu, idx, data);
- pmc = kvm_x86_ops->pmu_ops->msr_idx_to_pmc(vcpu, idx, &mask);
+ pmc = kvm_x86_ops->pmu_ops->rdpmc_idx_to_pmc(vcpu, idx, &mask);
if (!pmc)
return 1;
diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h
index 58265f761c3b..c3faa70d9886 100644
--- a/arch/x86/kvm/pmu.h
+++ b/arch/x86/kvm/pmu.h
@@ -25,9 +25,9 @@ struct kvm_pmu_ops {
unsigned (*find_fixed_event)(int idx);
bool (*pmc_is_enabled)(struct kvm_pmc *pmc);
struct kvm_pmc *(*pmc_idx_to_pmc)(struct kvm_pmu *pmu, int pmc_idx);
- struct kvm_pmc *(*msr_idx_to_pmc)(struct kvm_vcpu *vcpu, unsigned idx,
- u64 *mask);
- int (*is_valid_msr_idx)(struct kvm_vcpu *vcpu, unsigned idx);
+ struct kvm_pmc *(*rdpmc_idx_to_pmc)(struct kvm_vcpu *vcpu,
+ unsigned int idx, u64 *mask);
+ int (*is_valid_rdpmc_idx)(struct kvm_vcpu *vcpu, unsigned int idx);
bool (*is_valid_msr)(struct kvm_vcpu *vcpu, u32 msr);
int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
@@ -110,7 +110,7 @@ void reprogram_counter(struct kvm_pmu *pmu, int pmc_idx);
void kvm_pmu_deliver_pmi(struct kvm_vcpu *vcpu);
void kvm_pmu_handle_event(struct kvm_vcpu *vcpu);
int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
-int kvm_pmu_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx);
+int kvm_pmu_is_valid_rdpmc_idx(struct kvm_vcpu *vcpu, unsigned int idx);
bool kvm_pmu_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr);
int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
diff --git a/arch/x86/kvm/pmu_amd.c b/arch/x86/kvm/pmu_amd.c
index c8388389a3b0..759b090f8140 100644
--- a/arch/x86/kvm/pmu_amd.c
+++ b/arch/x86/kvm/pmu_amd.c
@@ -174,7 +174,7 @@ static struct kvm_pmc *amd_pmc_idx_to_pmc(struct kvm_pmu *pmu, int pmc_idx)
}
/* returns 0 if idx's corresponding MSR exists; otherwise returns 1. */
-static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
+static int amd_is_valid_rdpmc_idx(struct kvm_vcpu *vcpu, unsigned int idx)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
@@ -184,7 +184,8 @@ static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
}
/* idx is the ECX register of RDPMC instruction */
-static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *mask)
+static struct kvm_pmc *amd_rdpmc_idx_to_pmc(struct kvm_vcpu *vcpu,
+ unsigned int idx, u64 *mask)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *counters;
@@ -306,8 +307,8 @@ struct kvm_pmu_ops amd_pmu_ops = {
.find_fixed_event = amd_find_fixed_event,
.pmc_is_enabled = amd_pmc_is_enabled,
.pmc_idx_to_pmc = amd_pmc_idx_to_pmc,
- .msr_idx_to_pmc = amd_msr_idx_to_pmc,
- .is_valid_msr_idx = amd_is_valid_msr_idx,
+ .rdpmc_idx_to_pmc = amd_rdpmc_idx_to_pmc,
+ .is_valid_rdpmc_idx = amd_is_valid_rdpmc_idx,
.is_valid_msr = amd_is_valid_msr,
.get_msr = amd_pmu_get_msr,
.set_msr = amd_pmu_set_msr,
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index 3e9c059099e9..8b999dae15f2 100644
--- a/arch/x86/kvm/vmx/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
@@ -111,7 +111,7 @@ static struct kvm_pmc *intel_pmc_idx_to_pmc(struct kvm_pmu *pmu, int pmc_idx)
}
/* returns 0 if idx's corresponding MSR exists; otherwise returns 1. */
-static int intel_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
+static int intel_is_valid_rdpmc_idx(struct kvm_vcpu *vcpu, unsigned int idx)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
bool fixed = idx & (1u << 30);
@@ -122,8 +122,8 @@ static int intel_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
(fixed && idx >= pmu->nr_arch_fixed_counters);
}
-static struct kvm_pmc *intel_msr_idx_to_pmc(struct kvm_vcpu *vcpu,
- unsigned idx, u64 *mask)
+static struct kvm_pmc *intel_rdpmc_idx_to_pmc(struct kvm_vcpu *vcpu,
+ unsigned int idx, u64 *mask)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
bool fixed = idx & (1u << 30);
@@ -366,8 +366,8 @@ struct kvm_pmu_ops intel_pmu_ops = {
.find_fixed_event = intel_find_fixed_event,
.pmc_is_enabled = intel_pmc_is_enabled,
.pmc_idx_to_pmc = intel_pmc_idx_to_pmc,
- .msr_idx_to_pmc = intel_msr_idx_to_pmc,
- .is_valid_msr_idx = intel_is_valid_msr_idx,
+ .rdpmc_idx_to_pmc = intel_rdpmc_idx_to_pmc,
+ .is_valid_rdpmc_idx = intel_is_valid_rdpmc_idx,
.is_valid_msr = intel_is_valid_msr,
.get_msr = intel_pmu_get_msr,
.set_msr = intel_pmu_set_msr,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 661e2bf38526..72ce691fd45d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6111,7 +6111,7 @@ static void emulator_set_smbase(struct x86_emulate_ctxt *ctxt, u64 smbase)
static int emulator_check_pmc(struct x86_emulate_ctxt *ctxt,
u32 pmc)
{
- return kvm_pmu_is_valid_msr_idx(emul_to_vcpu(ctxt), pmc);
+ return kvm_pmu_is_valid_rdpmc_idx(emul_to_vcpu(ctxt), pmc);
}
static int emulator_read_pmc(struct x86_emulate_ctxt *ctxt,
--
2.21.0
next prev parent reply other threads:[~2019-10-22 8:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-21 16:06 [PATCH v3 0/6] KVM: x86/vPMU: Efficiency optimization by reusing last created perf_event Like Xu
2019-10-21 16:06 ` [PATCH v3 1/6] perf/core: Provide a kernel-internal interface to recalibrate event period Like Xu
2019-10-21 16:06 ` [PATCH v3 2/6] perf/core: Provide a kernel-internal interface to pause perf_event Like Xu
2019-10-21 16:06 ` Like Xu [this message]
2019-10-23 17:55 ` [PATCH v3 3/6] KVM: x86/vPMU: Rename pmu_ops callbacks from msr_idx to rdpmc_idx Jim Mattson
2019-10-21 16:06 ` [PATCH v3 4/6] KVM: x86/vPMU: Introduce a new kvm_pmu_ops->msr_idx_to_pmc callback Like Xu
2019-10-26 5:28 ` kbuild test robot
2019-10-26 5:28 ` [RFC PATCH] KVM: x86/vPMU: intel_msr_idx_to_pmc() can be static kbuild test robot
2019-10-21 16:06 ` [PATCH v3 5/6] KVM: x86/vPMU: Reuse perf_event to avoid unnecessary pmc_reprogram_counter Like Xu
2019-10-21 16:06 ` [PATCH v3 6/6] KVM: x86/vPMU: Add lazy mechanism to release perf_event per vPMC Like Xu
2019-10-22 10:47 ` Paolo Bonzini
2019-10-22 12:00 ` Like Xu
2019-10-22 14:09 ` Paolo Bonzini
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