i386: introduce hv_cpuid_get_host()
As a preparation to implementing hv_cpuid_cache intro introduce hv_cpuid_get_host(). No functional change intended. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20210422161130.652779-7-vkuznets@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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@ -1108,6 +1108,19 @@ static int hv_cpuid_get_fw(struct kvm_cpuid2 *cpuid, int fw, uint32_t *r)
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return 0;
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return 0;
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}
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}
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static uint32_t hv_cpuid_get_host(struct kvm_cpuid2 *cpuid, uint32_t func,
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int reg)
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{
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struct kvm_cpuid_entry2 *entry;
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entry = cpuid_find_entry(cpuid, func, 0);
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if (!entry) {
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return 0;
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}
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return cpuid_entry_get_reg(entry, reg);
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}
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static bool hyperv_feature_supported(struct kvm_cpuid2 *cpuid, int feature)
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static bool hyperv_feature_supported(struct kvm_cpuid2 *cpuid, int feature)
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{
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{
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uint32_t r, fw, bits;
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uint32_t r, fw, bits;
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@ -1204,7 +1217,7 @@ static int hyperv_handle_properties(CPUState *cs,
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{
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{
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X86CPU *cpu = X86_CPU(cs);
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X86CPU *cpu = X86_CPU(cs);
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struct kvm_cpuid2 *cpuid;
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struct kvm_cpuid2 *cpuid;
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struct kvm_cpuid_entry2 *c, *c2;
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struct kvm_cpuid_entry2 *c;
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uint32_t cpuid_i = 0;
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uint32_t cpuid_i = 0;
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int r;
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int r;
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@ -1236,46 +1249,47 @@ static int hyperv_handle_properties(CPUState *cs,
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}
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}
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if (cpu->hyperv_passthrough) {
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if (cpu->hyperv_passthrough) {
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c = cpuid_find_entry(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, 0);
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cpu->hyperv_vendor_id[0] =
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if (c) {
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hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_EBX);
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cpu->hyperv_vendor_id[0] = c->ebx;
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cpu->hyperv_vendor_id[1] =
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cpu->hyperv_vendor_id[1] = c->ecx;
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hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_ECX);
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cpu->hyperv_vendor_id[2] = c->edx;
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cpu->hyperv_vendor_id[2] =
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cpu->hyperv_vendor = g_realloc(cpu->hyperv_vendor,
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hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_EDX);
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sizeof(cpu->hyperv_vendor_id) + 1);
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cpu->hyperv_vendor = g_realloc(cpu->hyperv_vendor,
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memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id,
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sizeof(cpu->hyperv_vendor_id) + 1);
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sizeof(cpu->hyperv_vendor_id));
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memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id,
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cpu->hyperv_vendor[sizeof(cpu->hyperv_vendor_id)] = 0;
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sizeof(cpu->hyperv_vendor_id));
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}
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cpu->hyperv_vendor[sizeof(cpu->hyperv_vendor_id)] = 0;
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c = cpuid_find_entry(cpuid, HV_CPUID_INTERFACE, 0);
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cpu->hyperv_interface_id[0] =
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if (c) {
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hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EAX);
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cpu->hyperv_interface_id[0] = c->eax;
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cpu->hyperv_interface_id[1] =
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cpu->hyperv_interface_id[1] = c->ebx;
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hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EBX);
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cpu->hyperv_interface_id[2] = c->ecx;
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cpu->hyperv_interface_id[2] =
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cpu->hyperv_interface_id[3] = c->edx;
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hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_ECX);
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}
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cpu->hyperv_interface_id[3] =
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hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EDX);
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c = cpuid_find_entry(cpuid, HV_CPUID_VERSION, 0);
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cpu->hyperv_version_id[0] =
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if (c) {
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hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EAX);
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cpu->hyperv_version_id[0] = c->eax;
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cpu->hyperv_version_id[1] =
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cpu->hyperv_version_id[1] = c->ebx;
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hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EBX);
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cpu->hyperv_version_id[2] = c->ecx;
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cpu->hyperv_version_id[2] =
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cpu->hyperv_version_id[3] = c->edx;
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hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_ECX);
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}
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cpu->hyperv_version_id[3] =
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hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EDX);
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c = cpuid_find_entry(cpuid, HV_CPUID_IMPLEMENT_LIMITS, 0);
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cpu->hv_max_vps = hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS,
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if (c) {
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R_EAX);
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cpu->hv_max_vps = c->eax;
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cpu->hyperv_limits[0] =
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cpu->hyperv_limits[0] = c->ebx;
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hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EBX);
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cpu->hyperv_limits[1] = c->ecx;
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cpu->hyperv_limits[1] =
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cpu->hyperv_limits[2] = c->edx;
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hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_ECX);
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}
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cpu->hyperv_limits[2] =
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hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EDX);
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c = cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0);
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cpu->hyperv_spinlock_attempts =
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if (c) {
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hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_EBX);
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cpu->hyperv_spinlock_attempts = c->ebx;
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}
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}
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}
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/* Features */
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/* Features */
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@ -1349,10 +1363,8 @@ static int hyperv_handle_properties(CPUState *cs,
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if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_ON) {
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if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_ON) {
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c->eax |= HV_NO_NONARCH_CORESHARING;
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c->eax |= HV_NO_NONARCH_CORESHARING;
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} else if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_AUTO) {
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} else if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_AUTO) {
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c2 = cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0);
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c->eax |= hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_EAX) &
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if (c2) {
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HV_NO_NONARCH_CORESHARING;
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c->eax |= c2->eax & HV_NO_NONARCH_CORESHARING;
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}
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}
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}
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c = &cpuid_ent[cpuid_i++];
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c = &cpuid_ent[cpuid_i++];
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