lkml.org 
[lkml]   [2019]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 05/12] KVM/x86/vPMU: tweak kvm_pmu_get_msr
Date
This patch changes kvm_pmu_get_msr to get the msr_data struct, because
The host_initiated field from the struct could be used by get_msr. This
also makes this API be consistent with kvm_pmu_set_msr.

Signed-off-by: Wei Wang <wei.w.wang@intel.com>
---
arch/x86/kvm/pmu.c | 4 ++--
arch/x86/kvm/pmu.h | 4 ++--
arch/x86/kvm/pmu_amd.c | 7 ++++---
arch/x86/kvm/vmx/pmu_intel.c | 15 ++++++++-------
arch/x86/kvm/x86.c | 4 ++--
5 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index b438ffa..57e0df3 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -318,9 +318,9 @@ bool kvm_pmu_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
return kvm_x86_ops->pmu_ops->is_valid_msr(vcpu, msr);
}

-int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
+int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
- return kvm_x86_ops->pmu_ops->get_msr(vcpu, msr, data);
+ return kvm_x86_ops->pmu_ops->get_msr(vcpu, msr_info);
}

int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h
index 5f3c7a4..e1bcd2b 100644
--- a/arch/x86/kvm/pmu.h
+++ b/arch/x86/kvm/pmu.h
@@ -29,7 +29,7 @@ struct kvm_pmu_ops {
int (*is_valid_msr_idx)(struct kvm_vcpu *vcpu, unsigned idx);
bool (*is_valid_msr)(struct kvm_vcpu *vcpu, u32 msr);
bool (*lbr_enable)(struct kvm_vcpu *vcpu);
- int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
+ int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
void (*refresh)(struct kvm_vcpu *vcpu);
void (*init)(struct kvm_vcpu *vcpu);
@@ -113,7 +113,7 @@ 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);
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_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
void kvm_pmu_refresh(struct kvm_vcpu *vcpu);
void kvm_pmu_reset(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/pmu_amd.c b/arch/x86/kvm/pmu_amd.c
index 1495a73..99c4097 100644
--- a/arch/x86/kvm/pmu_amd.c
+++ b/arch/x86/kvm/pmu_amd.c
@@ -210,21 +210,22 @@ static bool amd_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
return ret;
}

-static int amd_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
+static int amd_pmu_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc;
+ u32 msr = msr_info->index;

/* MSR_PERFCTRn */
pmc = get_gp_pmc_amd(pmu, msr, PMU_TYPE_COUNTER);
if (pmc) {
- *data = pmc_read_counter(pmc);
+ msr_info->data = pmc_read_counter(pmc);
return 0;
}
/* MSR_EVNTSELn */
pmc = get_gp_pmc_amd(pmu, msr, PMU_TYPE_EVNTSEL);
if (pmc) {
- *data = pmc->eventsel;
+ msr_info->data = pmc->eventsel;
return 0;
}

diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index 6728701..cd3b5d2 100644
--- a/arch/x86/kvm/vmx/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
@@ -299,31 +299,32 @@ static bool intel_pmu_lbr_enable(struct kvm_vcpu *vcpu)
return true;
}

-static int intel_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
+static int intel_pmu_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc;
+ u32 msr = msr_info->index;

switch (msr) {
case MSR_CORE_PERF_FIXED_CTR_CTRL:
- *data = pmu->fixed_ctr_ctrl;
+ msr_info->data = pmu->fixed_ctr_ctrl;
return 0;
case MSR_CORE_PERF_GLOBAL_STATUS:
- *data = pmu->global_status;
+ msr_info->data = pmu->global_status;
return 0;
case MSR_CORE_PERF_GLOBAL_CTRL:
- *data = pmu->global_ctrl;
+ msr_info->data = pmu->global_ctrl;
return 0;
case MSR_CORE_PERF_GLOBAL_OVF_CTRL:
- *data = pmu->global_ovf_ctrl;
+ msr_info->data = pmu->global_ovf_ctrl;
return 0;
default:
if ((pmc = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0)) ||
(pmc = get_fixed_pmc(pmu, msr))) {
- *data = pmc_read_counter(pmc);
+ msr_info->data = pmc_read_counter(pmc);
return 0;
} else if ((pmc = get_gp_pmc(pmu, msr, MSR_P6_EVNTSEL0))) {
- *data = pmc->eventsel;
+ msr_info->data = pmc->eventsel;
return 0;
}
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2a41aab..c8f32e7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2741,7 +2741,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_P6_PERFCTR0 ... MSR_P6_PERFCTR1:
case MSR_P6_EVNTSEL0 ... MSR_P6_EVNTSEL1:
if (kvm_pmu_is_valid_msr(vcpu, msr_info->index))
- return kvm_pmu_get_msr(vcpu, msr_info->index, &msr_info->data);
+ return kvm_pmu_get_msr(vcpu, msr_info);
msr_info->data = 0;
break;
case MSR_IA32_UCODE_REV:
@@ -2884,7 +2884,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
break;
default:
if (kvm_pmu_is_valid_msr(vcpu, msr_info->index))
- return kvm_pmu_get_msr(vcpu, msr_info->index, &msr_info->data);
+ return kvm_pmu_get_msr(vcpu, msr_info);
if (!ignore_msrs) {
vcpu_debug_ratelimited(vcpu, "unhandled rdmsr: 0x%x\n",
msr_info->index);
--
2.7.4
\
 
 \ /
  Last update: 2019-02-14 10:44    [W:0.185 / U:9.492 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site