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envelope-from=dongli.zhang@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org AMD does not have what is commonly referred to as an architectural PMU. Therefore, we need to rename the following variables to be applicable for both Intel and AMD: - has_architectural_pmu_version - num_architectural_pmu_gp_counters - num_architectural_pmu_fixed_counters For Intel processors, the meaning of has_pmu_version remains unchanged. For AMD processors: has_pmu_version == 1 corresponds to versions before AMD PerfMonV2. has_pmu_version == 2 corresponds to AMD PerfMonV2. Signed-off-by: Dongli Zhang --- target/i386/kvm/kvm.c | 49 ++++++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 21 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 5c0276f889..ca2b644e2c 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -168,9 +168,16 @@ static bool has_msr_pkrs; static bool has_msr_hwcr; static bool has_pmu_cap; -static uint32_t has_architectural_pmu_version; -static uint32_t num_architectural_pmu_gp_counters; -static uint32_t num_architectural_pmu_fixed_counters; +/* + * For Intel processors, the meaning is the architectural PMU version + * number. + * + * For AMD processors: 1 corresponds to the prior versions, and 2 + * corresponds to AMD PerfMonV2. + */ +static uint32_t has_pmu_version; +static uint32_t num_pmu_gp_counters; +static uint32_t num_pmu_fixed_counters; static int has_xsave2; static int has_xcrs; @@ -2042,24 +2049,24 @@ static void kvm_init_pmu_info(CPUX86State *env) cpu_x86_cpuid(env, 0x0a, 0, &eax, &unused, &unused, &edx); - has_architectural_pmu_version = eax & 0xff; - if (has_architectural_pmu_version > 0) { - num_architectural_pmu_gp_counters = (eax & 0xff00) >> 8; + has_pmu_version = eax & 0xff; + if (has_pmu_version > 0) { + num_pmu_gp_counters = (eax & 0xff00) >> 8; /* * Shouldn't be more than 32, since that's the number of bits * available in EBX to tell us _which_ counters are available. * Play it safe. */ - if (num_architectural_pmu_gp_counters > MAX_GP_COUNTERS) { - num_architectural_pmu_gp_counters = MAX_GP_COUNTERS; + if (num_pmu_gp_counters > MAX_GP_COUNTERS) { + num_pmu_gp_counters = MAX_GP_COUNTERS; } - if (has_architectural_pmu_version > 1) { - num_architectural_pmu_fixed_counters = edx & 0x1f; + if (has_pmu_version > 1) { + num_pmu_fixed_counters = edx & 0x1f; - if (num_architectural_pmu_fixed_counters > MAX_FIXED_COUNTERS) { - num_architectural_pmu_fixed_counters = MAX_FIXED_COUNTERS; + if (num_pmu_fixed_counters > MAX_FIXED_COUNTERS) { + num_pmu_fixed_counters = MAX_FIXED_COUNTERS; } } } @@ -4020,25 +4027,25 @@ static int kvm_put_msrs(X86CPU *cpu, int level) kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, env->poll_control_msr); } - if (has_architectural_pmu_version > 0) { - if (has_architectural_pmu_version > 1) { + if (has_pmu_version > 0) { + if (has_pmu_version > 1) { /* Stop the counter. */ kvm_msr_entry_add(cpu, MSR_CORE_PERF_FIXED_CTR_CTRL, 0); kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_CTRL, 0); } /* Set the counter values. */ - for (i = 0; i < num_architectural_pmu_fixed_counters; i++) { + for (i = 0; i < num_pmu_fixed_counters; i++) { kvm_msr_entry_add(cpu, MSR_CORE_PERF_FIXED_CTR0 + i, env->msr_fixed_counters[i]); } - for (i = 0; i < num_architectural_pmu_gp_counters; i++) { + for (i = 0; i < num_pmu_gp_counters; i++) { kvm_msr_entry_add(cpu, MSR_P6_PERFCTR0 + i, env->msr_gp_counters[i]); kvm_msr_entry_add(cpu, MSR_P6_EVNTSEL0 + i, env->msr_gp_evtsel[i]); } - if (has_architectural_pmu_version > 1) { + if (has_pmu_version > 1) { kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_STATUS, env->msr_global_status); kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_OVF_CTRL, @@ -4496,17 +4503,17 @@ static int kvm_get_msrs(X86CPU *cpu) if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_POLL_CONTROL)) { kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, 1); } - if (has_architectural_pmu_version > 0) { - if (has_architectural_pmu_version > 1) { + if (has_pmu_version > 0) { + if (has_pmu_version > 1) { kvm_msr_entry_add(cpu, MSR_CORE_PERF_FIXED_CTR_CTRL, 0); kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_CTRL, 0); kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_STATUS, 0); kvm_msr_entry_add(cpu, MSR_CORE_PERF_GLOBAL_OVF_CTRL, 0); } - for (i = 0; i < num_architectural_pmu_fixed_counters; i++) { + for (i = 0; i < num_pmu_fixed_counters; i++) { kvm_msr_entry_add(cpu, MSR_CORE_PERF_FIXED_CTR0 + i, 0); } - for (i = 0; i < num_architectural_pmu_gp_counters; i++) { + for (i = 0; i < num_pmu_gp_counters; i++) { kvm_msr_entry_add(cpu, MSR_P6_PERFCTR0 + i, 0); kvm_msr_entry_add(cpu, MSR_P6_EVNTSEL0 + i, 0); }