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X-Received-From: 2607:f8b0:400c:c08::241 Subject: [Qemu-devel] [PATCH v2 09/13] hvf: refactor cpuid code X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sergio Andres Gomez Del Real Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This patch generalizes some code in cpu.c, sharing code and data between hvf and kvm. It also beings calling the new hvf_get_supported_cpuid where appropriate. Signed-off-by: Sergio Andres Gomez Del Real --- target/i386/cpu-qom.h | 4 +-- target/i386/cpu.c | 80 ++++++++++++++++++++++++++++++++++++++---------= ---- 2 files changed, 62 insertions(+), 22 deletions(-) diff --git a/target/i386/cpu-qom.h b/target/i386/cpu-qom.h index c2205e6077..22f95eb3a4 100644 --- a/target/i386/cpu-qom.h +++ b/target/i386/cpu-qom.h @@ -47,7 +47,7 @@ typedef struct X86CPUDefinition X86CPUDefinition; /** * X86CPUClass: * @cpu_def: CPU model definition - * @kvm_required: Whether CPU model requires KVM to be enabled. + * @host_cpuid_required: Whether CPU model requires cpuid from host. * @ordering: Ordering on the "-cpu help" CPU model list. * @migration_safe: See CpuDefinitionInfo::migration_safe * @static_model: See CpuDefinitionInfo::static @@ -66,7 +66,7 @@ typedef struct X86CPUClass { */ X86CPUDefinition *cpu_def; =20 - bool kvm_required; + bool host_cpuid_required; int ordering; bool migration_safe; bool static_model; diff --git a/target/i386/cpu.c b/target/i386/cpu.c index ddc45abd70..01957411bd 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -22,6 +22,7 @@ #include "cpu.h" #include "exec/exec-all.h" #include "sysemu/kvm.h" +#include "sysemu/hvf.h" #include "sysemu/cpus.h" #include "kvm_i386.h" =20 @@ -613,6 +614,15 @@ static uint32_t xsave_area_size(uint64_t mask) return ret; } =20 +static inline bool accel_uses_host_cpuid(void) +{ + if (kvm_enabled() || hvf_enabled()) { + return true; + } else { + return false; + } +} + static inline uint64_t x86_cpu_xsave_components(X86CPU *cpu) { return ((uint64_t)cpu->env.features[FEAT_XSAVE_COMP_HI]) << 32 | @@ -1643,10 +1653,15 @@ static void max_x86_cpu_initfn(Object *obj) */ cpu->max_features =3D true; =20 - if (kvm_enabled()) { + if (accel_uses_host_cpuid()) { char vendor[CPUID_VENDOR_SZ + 1] =3D { 0 }; char model_id[CPUID_MODEL_ID_SZ + 1] =3D { 0 }; int family, model, stepping; + X86CPUDefinition host_cpudef =3D { }; + uint32_t eax =3D 0, ebx =3D 0, ecx =3D 0, edx =3D 0; + + host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); + x86_cpu_vendor_words2str(host_cpudef.vendor, ebx, edx, ecx); =20 host_vendor_fms(vendor, &family, &model, &stepping); =20 @@ -1660,12 +1675,21 @@ static void max_x86_cpu_initfn(Object *obj) object_property_set_str(OBJECT(cpu), model_id, "model-id", &error_abort); =20 - env->cpuid_min_level =3D - kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX); - env->cpuid_min_xlevel =3D - kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX); - env->cpuid_min_xlevel2 =3D - kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX); + if (kvm_enabled()) { + env->cpuid_min_level =3D + kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX); + env->cpuid_min_xlevel =3D + kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX); + env->cpuid_min_xlevel2 =3D + kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX); + } else { + env->cpuid_min_level =3D + hvf_get_supported_cpuid(0x0, 0, R_EAX); + env->cpuid_min_xlevel =3D + hvf_get_supported_cpuid(0x80000000, 0, R_EAX); + env->cpuid_min_xlevel2 =3D + hvf_get_supported_cpuid(0xC0000000, 0, R_EAX); + } =20 if (lmce_supported()) { object_property_set_bool(OBJECT(cpu), true, "lmce", &error_abo= rt); @@ -1691,18 +1715,21 @@ static const TypeInfo max_x86_cpu_type_info =3D { .class_init =3D max_x86_cpu_class_init, }; =20 -#ifdef CONFIG_KVM - +#if defined(CONFIG_KVM) || defined(CONFIG_HVF) static void host_x86_cpu_class_init(ObjectClass *oc, void *data) { X86CPUClass *xcc =3D X86_CPU_CLASS(oc); =20 - xcc->kvm_required =3D true; + xcc->host_cpuid_required =3D true; xcc->ordering =3D 8; =20 - xcc->model_description =3D - "KVM processor with all supported host features " - "(only available in KVM mode)"; + if (kvm_enabled()) { + xcc->model_description =3D + "KVM processor with all supported host features "; + } else if (hvf_enabled()) { + xcc->model_description =3D + "HVF processor with all supported host features "; + } } =20 static const TypeInfo host_x86_cpu_type_info =3D { @@ -1724,7 +1751,7 @@ static void report_unavailable_features(FeatureWord w= , uint32_t mask) assert(reg); fprintf(stderr, "warning: %s doesn't support requested feature= : " "CPUID.%02XH:%s%s%s [bit %d]\n", - kvm_enabled() ? "host" : "TCG", + accel_uses_host_cpuid() ? "host" : "TCG", f->cpuid_eax, reg, f->feat_names[i] ? "." : "", f->feat_names[i] ? f->feat_names[i] : "", i); @@ -2175,7 +2202,7 @@ static void x86_cpu_class_check_missing_features(X86C= PUClass *xcc, Error *err =3D NULL; strList **next =3D missing_feats; =20 - if (xcc->kvm_required && !kvm_enabled()) { + if (xcc->host_cpuid_required && !accel_uses_host_cpuid()) { strList *new =3D g_new0(strList, 1); new->value =3D g_strdup("kvm");; *missing_feats =3D new; @@ -2337,6 +2364,10 @@ static uint32_t x86_cpu_get_supported_feature_word(F= eatureWord w, r =3D kvm_arch_get_supported_cpuid(kvm_state, wi->cpuid_eax, wi->cpuid_ecx, wi->cpuid_reg); + } else if (hvf_enabled()) { + r =3D hvf_get_supported_cpuid(wi->cpuid_eax, + wi->cpuid_ecx, + wi->cpuid_reg); } else if (tcg_enabled()) { r =3D wi->tcg_features; } else { @@ -2396,6 +2427,7 @@ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefin= ition *def, Error **errp) } =20 /* Special cases not set in the X86CPUDefinition structs: */ + /* TODO: implement for hvf */ if (kvm_enabled()) { if (!kvm_irqchip_in_kernel()) { x86_cpu_change_kvm_default("x2apic", "off"); @@ -2416,7 +2448,7 @@ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefin= ition *def, Error **errp) * when doing cross vendor migration */ vendor =3D def->vendor; - if (kvm_enabled()) { + if (accel_uses_host_cpuid()) { uint32_t ebx =3D 0, ecx =3D 0, edx =3D 0; host_cpuid(0, 0, NULL, &ebx, &ecx, &edx); x86_cpu_vendor_words2str(host_vendor, ebx, edx, ecx); @@ -2872,6 +2904,11 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,= uint32_t count, *ebx =3D kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX); *ecx =3D kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX); *edx =3D kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX); + } else if (hvf_enabled() && cpu->enable_pmu) { + *eax =3D hvf_get_supported_cpuid(0xA, count, R_EAX); + *ebx =3D hvf_get_supported_cpuid(0xA, count, R_EBX); + *ecx =3D hvf_get_supported_cpuid(0xA, count, R_ECX); + *edx =3D hvf_get_supported_cpuid(0xA, count, R_EDX); } else { *eax =3D 0; *ebx =3D 0; @@ -3220,6 +3257,7 @@ static void x86_cpu_reset(CPUState *s) =20 s->halted =3D !cpu_is_bsp(cpu); =20 + /* TODO: implement for hvf */ if (kvm_enabled()) { kvm_arch_reset_vcpu(cpu); } @@ -3262,6 +3300,7 @@ APICCommonClass *apic_get_class(void) { const char *apic_type =3D "apic"; =20 + /* TODO: implement for hvf */ if (kvm_apic_in_kernel()) { apic_type =3D "kvm-apic"; } else if (xen_enabled()) { @@ -3492,6 +3531,7 @@ static void x86_cpu_expand_features(X86CPU *cpu, Erro= r **errp) } } =20 + /* TODO: implement for hvf */ if (!kvm_enabled() || !cpu->expose_kvm) { env->features[FEAT_KVM] =3D 0; } @@ -3575,7 +3615,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error= **errp) Error *local_err =3D NULL; static bool ht_warned; =20 - if (xcc->kvm_required && !kvm_enabled()) { + if (xcc->host_cpuid_required && !accel_uses_host_cpuid()) { char *name =3D x86_cpu_class_get_model_name(xcc); error_setg(&local_err, "CPU model '%s' requires KVM", name); g_free(name); @@ -3597,7 +3637,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error= **errp) x86_cpu_report_filtered_features(cpu); if (cpu->enforce_cpuid) { error_setg(&local_err, - kvm_enabled() ? + accel_uses_host_cpuid() ? "Host doesn't support requested features" : "TCG doesn't support requested features"); goto out; @@ -3620,7 +3660,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error= **errp) * consumer AMD devices but nothing else. */ if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) { - if (kvm_enabled()) { + if (accel_uses_host_cpuid()) { uint32_t host_phys_bits =3D x86_host_phys_bits(); static bool warned; =20 @@ -4207,7 +4247,7 @@ static void x86_cpu_register_types(void) } type_register_static(&max_x86_cpu_type_info); type_register_static(&x86_base_cpu_type_info); -#ifdef CONFIG_KVM +#if defined(CONFIG_KVM) || defined(CONFIG_HVF) type_register_static(&host_x86_cpu_type_info); #endif } --=20 2.14.1