From nobody Mon Feb 9 09:10:03 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA1F41B8EA1 for ; Fri, 16 Aug 2024 13:01:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723813313; cv=none; b=AbaWVdnTGr1QRzoCDUeILf+x70yy1kmjEvprERRoAxjjAuJghgjexHY3NiAEsA8zorDLocnDuj59QPQi6DbJA4Wv7XvPmbAnFS4W3C2H2PkZwC/y/tWBnLNOU6iewYkd3gtZ4eEw6FFl7gibbQzTsZt12Usct8qIDELrgmFVI70= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723813313; c=relaxed/simple; bh=mEgP2tc3vMFcEK8rKTT6ilkOYcPdY4qHPG0naGjwrf8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BRISwGuFS5xmHExy9W2AVbWr6zAoMkO5hm8whQLvOimzXeN/OjU/6lbrp7XJoKDUvVrlgy4/3IBEWqIH3IPdlm+ZMZ6HgFZojTmKBorazSsKjl1Dk0Hk+B6nMidzYpWLfVkLMCTUuIJZfolO1Zr25DMMguftDSKuMn33hfQKJaI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=e+4qOU86; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="e+4qOU86" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1723813311; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pRywQ20dieOYbE4TiZ0Np1Bbhp1CoMBBM+YIuAbOks0=; b=e+4qOU86FS4+oKr25akeEe9qTL8q80Nrr3VYsSqhjZmv6NLlDWU7zZL1Hz3G+16HfUXBbb nqk9XiBj2fg6Gg3tksgRa2YN1y5DTFfp+V+o3OgMqqbuieZLvfpmrLg0ku7Wunnn7lcCor yhWqAeK4TI6lRSL+c9bHWB86cblTW/A= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-101-56EMdacBMvydTfdlKV91-g-1; Fri, 16 Aug 2024 09:01:47 -0400 X-MC-Unique: 56EMdacBMvydTfdlKV91-g-1 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id BE3271955F3B; Fri, 16 Aug 2024 13:01:46 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.45.225.56]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 0467F1955F38; Fri, 16 Aug 2024 13:01:44 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson Cc: linux-kernel@vger.kernel.org Subject: [PATCH 2/2] KVM: selftests: Re-enable hyperv_evmcs/hyperv_svm_test on bare metal Date: Fri, 16 Aug 2024 15:01:39 +0200 Message-ID: <20240816130139.286246-3-vkuznets@redhat.com> In-Reply-To: <20240816130139.286246-1-vkuznets@redhat.com> References: <20240816130139.286246-1-vkuznets@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" KVM_CAP_HYPERV_DIRECT_TLBFLUSH is only reported when KVM runs on top of Hyper-V and hyperv_evmcs/hyperv_svm_test don't need that, these tests check that the feature is properly emulated for Hyper-V on KVM guests. There's no corresponding CAP for that, the feature is reported in KVM_GET_SUPPORTED_HV_CPUID. Hyper-V specific CPUIDs are not reported by KVM_GET_SUPPORTED_CPUID, implement dedicated kvm_hv_cpu_has() helper to do the job. Fixes: 6dac1195181c ("KVM: selftests: Make Hyper-V tests explicitly require= KVM Hyper-V support") Signed-off-by: Vitaly Kuznetsov --- .../testing/selftests/kvm/include/x86_64/hyperv.h | 14 ++++++++++++++ tools/testing/selftests/kvm/lib/x86_64/hyperv.c | 8 ++++++++ tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c | 2 +- .../testing/selftests/kvm/x86_64/hyperv_svm_test.c | 2 +- 4 files changed, 24 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/te= sting/selftests/kvm/include/x86_64/hyperv.h index a2e7cf7ee0ad..6849e2552f1b 100644 --- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h +++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h @@ -186,6 +186,18 @@ #define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED \ KVM_X86_CPU_FEATURE(HYPERV_CPUID_ENLIGHTMENT_INFO, 0, EAX, 14) =20 +/* HYPERV_CPUID_NESTED_FEATURES.EAX */ +#define HV_X64_NESTED_DIRECT_FLUSH \ + KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 17) +#define HV_X64_NESTED_GUEST_MAPPING_FLUSH \ + KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 18) +#define HV_X64_NESTED_MSR_BITMAP \ + KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 19) + +/* HYPERV_CPUID_NESTED_FEATURES.EBX */ +#define HV_X64_NESTED_EVMCS1_PERF_GLOBAL_CTRL \ + KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EBX, 0) + /* HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES.EAX */ #define HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING \ KVM_X86_CPU_FEATURE(HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES, 0, EAX, 1) @@ -347,4 +359,6 @@ const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(voi= d); const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu= ); void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu); =20 +bool kvm_hv_cpu_has(struct kvm_x86_cpu_feature feature); + #endif /* !SELFTEST_KVM_HYPERV_H */ diff --git a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c b/tools/testin= g/selftests/kvm/lib/x86_64/hyperv.c index b4a5e4ad7105..15bc8cd583aa 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c +++ b/tools/testing/selftests/kvm/lib/x86_64/hyperv.c @@ -67,6 +67,14 @@ const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(str= uct kvm_vcpu *vcpu) return cpuid; } =20 +bool kvm_hv_cpu_has(struct kvm_x86_cpu_feature feature) +{ + if (!kvm_has_cap(KVM_CAP_SYS_HYPERV_CPUID)) + return false; + + return kvm_cpuid_has(kvm_get_supported_hv_cpuid(), feature); +} + struct hyperv_test_pages *vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm, vm_vaddr_t *p_hv_pages_gva) { diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c b/tools/test= ing/selftests/kvm/x86_64/hyperv_evmcs.c index e192720bfe14..74cf19661309 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c @@ -242,7 +242,7 @@ int main(int argc, char *argv[]) TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_NESTED_STATE)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS)); - TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_DIRECT_TLBFLUSH)); + TEST_REQUIRE(kvm_hv_cpu_has(HV_X64_NESTED_DIRECT_FLUSH)); =20 vm =3D vm_create_with_one_vcpu(&vcpu, guest_code); =20 diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c b/tools/t= esting/selftests/kvm/x86_64/hyperv_svm_test.c index b987a3d79715..0ddb63229bcb 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c @@ -157,7 +157,7 @@ int main(int argc, char *argv[]) int stage; =20 TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM)); - TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_DIRECT_TLBFLUSH)); + TEST_REQUIRE(kvm_hv_cpu_has(HV_X64_NESTED_DIRECT_FLUSH)); =20 /* Create VM */ vm =3D vm_create_with_one_vcpu(&vcpu, guest_code); --=20 2.46.0