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bh=l+L48HxNUF/CF2ENqTmbBr9TXViabH+p1EZikdcCXpI=; b=BebPKZio8eEqBWZXdcsvtqbtn4idGfVI9jjdcVdQdl/cxIioHZEIIFuyuuiYQeb0ohvh1d fmwXFNUjnfL0R0fMg7ox8GY3UlWJdV88sRvZBz4oUtEtaHyCx0IvdNvOH/to49iXFUTJkc GQ7tQc2LVL7znW29aApbWNCroifDyYE= X-MC-Unique: ZgBrw1f2ORqv1ymm_E-QxA-1 From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH RFC v3 13/23] i386: introduce hv_cpuid_get_host() Date: Fri, 9 Oct 2020 14:18:32 +0200 Message-Id: <20201009121842.1938010-14-vkuznets@redhat.com> In-Reply-To: <20201009121842.1938010-1-vkuznets@redhat.com> References: <20201009121842.1938010-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=vkuznets@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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charset="utf-8" As a preparation to implementing hv_cpuid_cache intro introduce hv_cpuid_get_host(). No functional change intended. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm.c | 100 ++++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 44 deletions(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 73f0d3cd0c37..24636ce4bc69 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1106,6 +1106,19 @@ static int hv_cpuid_get_fw(struct kvm_cpuid2 *cpuid,= int fw, uint32_t *r) return 0; } =20 +static uint32_t hv_cpuid_get_host(struct kvm_cpuid2 *cpuid, uint32_t func, + int reg) +{ + struct kvm_cpuid_entry2 *entry; + + entry =3D cpuid_find_entry(cpuid, func, 0); + if (!entry) { + return 0; + } + + return cpuid_entry_get_reg(entry, reg); +} + static bool hyperv_feature_supported(struct kvm_cpuid2 *cpuid, int feature) { uint32_t r, fw, bits; @@ -1202,7 +1215,7 @@ static int hyperv_handle_properties(CPUState *cs, { X86CPU *cpu =3D X86_CPU(cs); struct kvm_cpuid2 *cpuid; - struct kvm_cpuid_entry2 *c, *c2; + struct kvm_cpuid_entry2 *c; uint32_t cpuid_i =3D 0; int r; =20 @@ -1234,45 +1247,46 @@ static int hyperv_handle_properties(CPUState *cs, } =20 if (cpu->hyperv_passthrough) { - c =3D cpuid_find_entry(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, 0= ); - if (c) { - cpu->hyperv_vendor_id[0] =3D c->ebx; - cpu->hyperv_vendor_id[1] =3D c->ecx; - cpu->hyperv_vendor_id[2] =3D c->edx; - cpu->hyperv_vendor =3D g_realloc(cpu->hyperv_vendor, - sizeof(cpu->hyperv_vendor_id) += 1); - memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id, - sizeof(cpu->hyperv_vendor_id)); - } - - c =3D cpuid_find_entry(cpuid, HV_CPUID_INTERFACE, 0); - if (c) { - cpu->hyperv_interface_id[0] =3D c->eax; - cpu->hyperv_interface_id[1] =3D c->ebx; - cpu->hyperv_interface_id[2] =3D c->ecx; - cpu->hyperv_interface_id[3] =3D c->edx; - } - - c =3D cpuid_find_entry(cpuid, HV_CPUID_VERSION, 0); - if (c) { - cpu->hyperv_version_id[0] =3D c->eax; - cpu->hyperv_version_id[1] =3D c->ebx; - cpu->hyperv_version_id[2] =3D c->ecx; - cpu->hyperv_version_id[3] =3D c->edx; - } - - c =3D cpuid_find_entry(cpuid, HV_CPUID_IMPLEMENT_LIMITS, 0); - if (c) { - cpu->hv_max_vps =3D c->eax; - cpu->hyperv_limits[0] =3D c->ebx; - cpu->hyperv_limits[1] =3D c->ecx; - cpu->hyperv_limits[2] =3D c->edx; - } - - c =3D cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0); - if (c) { - cpu->hyperv_spinlock_attempts =3D c->ebx; - } + cpu->hyperv_vendor_id[0] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_= EBX); + cpu->hyperv_vendor_id[1] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_= ECX); + cpu->hyperv_vendor_id[2] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_= EDX); + cpu->hyperv_vendor =3D g_realloc(cpu->hyperv_vendor, + sizeof(cpu->hyperv_vendor_id) + 1); + memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id, + sizeof(cpu->hyperv_vendor_id)); + + cpu->hyperv_interface_id[0] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EAX); + cpu->hyperv_interface_id[1] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EBX); + cpu->hyperv_interface_id[2] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_ECX); + cpu->hyperv_interface_id[3] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EDX); + + cpu->hyperv_version_id[0] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EAX); + cpu->hyperv_version_id[1] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EBX); + cpu->hyperv_version_id[2] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_ECX); + cpu->hyperv_version_id[3] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EDX); + + cpu->hv_max_vps =3D hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LI= MITS, + R_EAX); + cpu->hyperv_limits[0] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EBX); + cpu->hyperv_limits[1] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_ECX); + cpu->hyperv_limits[2] =3D + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EDX); + + cpu->hyperv_spinlock_attempts =3D + hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_EBX); } =20 /* Features */ @@ -1346,10 +1360,8 @@ static int hyperv_handle_properties(CPUState *cs, if (cpu->hyperv_no_nonarch_cs =3D=3D ON_OFF_AUTO_ON) { c->eax |=3D HV_NO_NONARCH_CORESHARING; } else if (cpu->hyperv_no_nonarch_cs =3D=3D ON_OFF_AUTO_AUTO) { - c2 =3D cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0); - if (c2) { - c->eax |=3D c2->eax & HV_NO_NONARCH_CORESHARING; - } + c->eax |=3D hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_= EAX) & + HV_NO_NONARCH_CORESHARING; } =20 c =3D &cpuid_ent[cpuid_i++]; --=20 2.25.4