From nobody Mon Feb 9 05:59:43 2026 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C145D14658B for ; Thu, 28 Nov 2024 01:34:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732757690; cv=none; b=S/pw4u9t/3uLlsgujKRLqSKzWJhgF+LPQqo8gxN5j/zPYUxU2jdSYRPxfhP2JDD8Kj1GmUtLranZ36HX5+p5cA3zvYuWfQso8r2cXBEnv8cary2Xvx5yOL9M8QzH/P0WocN7M51SYVhzdjj3iN5f/2c/1nT+Sz8o4yO/oPpKjrI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732757690; c=relaxed/simple; bh=Zi6nLxvCtqg7sRDOs2S1uLN1ASc4dep+KLdJOASySug=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=XsIByk3TReEeZtgS8g0+tFCr9IxJDO7UYHRBnphKrW2rSD2LH0zsFKh4DvBK4ZSvhXvGaq69LQA7SPcdaMbdnE4M6/e/psdl1QxEzbl5/sTEoPWAwroOoc5l7lTFUwGjYFwmOVawi9uOLL/ufJAMb5SNGd+lGaPywDscRlCYjBo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=ZFJrUHej; arc=none smtp.client-ip=209.85.215.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ZFJrUHej" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-7ea0069a8b0so180923a12.0 for ; Wed, 27 Nov 2024 17:34:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1732757688; x=1733362488; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=imzmUI4pwQd0UqeKMzmq2IeaU1wm8Js0tpOStaLC/Qo=; b=ZFJrUHejVILf6u/DVmbe5F9msgvE3HIzxoejbPPpD8Y51fg2D1tRYuU5xqjF8vsiMc 78/DSnhkaUEELbqqtPtDrCo3tA3wSYRNpUJB3oU1Si1sniJ+JxP4jBf4+ewivG37mQcf FPeFo8QWbsuPjyiGGesqg+lrWggZONOxCOvo+5mWJ6Qpmhk2VdTMojcfvjKMiiJRm2sm E3xZSPYrdwTpzeTLH3oujK4LXw7yPYN8jnZN+4dP15UJLWMsK2qYOg/8sS/ggJuEx9TO isvpUNHEz48WZD1am3H7ibYxza0hGRam8DOJU9JppMWUZV7WEpd0yy6Zo/zSwua/eM84 SLjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732757688; x=1733362488; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=imzmUI4pwQd0UqeKMzmq2IeaU1wm8Js0tpOStaLC/Qo=; b=dRci36P6grCxjoqgyyw+ZDC6azM5qWvxlOT4NWxLiAvxq6IwE2wMG4/gjPM75AEpXu 8Y4Lj8/LvDRt4D3R4TcWlwU63huQzatYDA9MfF1H+dv0eQeROYQofHetLbvcm+dMMoyh MJO/WI59dNoCzn6GZuoGHiADjlt37hUVufQiCeMyJyQc69+ITJNmWS8My1lI0qUvSofP 7a779IHBRYwpEDvJouK9YGin7lANnxXOGIbosWLOgG7QQieoUwqKdFiCVAufUJ8cq4GV i0ypDlt16iclQCArV/lCmx+LBNjaH9UNEQVMCL1MMwn6CSHC5/K88E/E1UH/00BFvKmf iFkQ== X-Forwarded-Encrypted: i=1; AJvYcCVnUdAaJ0qehmyVPDiJwoidhRNRYgslMWXbTTFTmX1rawp5kfXuwKzlCdtkREnkVVCrRYdOcBAHAx+LmBk=@vger.kernel.org X-Gm-Message-State: AOJu0YzVXTvjL4+BxqtwO67XYPnqHIBnEzmeDyoXNPZCONqD3ZaJgETt Wc5yT+oR9y3O2qqqggFg1JmKZNhzeaR8m2kj/+yUudiLgdSc0C0Ye6L3nKwDLwvjpRT46Qk/6gc 4yw== X-Google-Smtp-Source: AGHT+IHaM60Lr29ZkEqvcH1kdwSyGKEW3crO+fz+1pKWqPQXY9T6XKATriFjHO+n6jho2+7tLHiRqiLxy1A= X-Received: from pgbfq20.prod.google.com ([2002:a05:6a02:2994:b0:7fc:2823:d6c4]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:3291:b0:1e0:dde9:f383 with SMTP id adf61e73a8af0-1e0e0ac69eamr10098846637.4.1732757687885; Wed, 27 Nov 2024 17:34:47 -0800 (PST) Reply-To: Sean Christopherson Date: Wed, 27 Nov 2024 17:33:36 -0800 In-Reply-To: <20241128013424.4096668-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241128013424.4096668-1-seanjc@google.com> X-Mailer: git-send-email 2.47.0.338.g60cca15819-goog Message-ID: <20241128013424.4096668-10-seanjc@google.com> Subject: [PATCH v3 09/57] KVM: selftests: Verify KVM stuffs runtime CPUID OS bits on CR4 writes From: Sean Christopherson To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Jarkko Sakkinen Cc: kvm@vger.kernel.org, linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org, Maxim Levitsky , Hou Wenlong , Xiaoyao Li , Kechen Lu , Oliver Upton , Binbin Wu , Yang Weijiang , Robert Hoo Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Extend x86's set sregs test to verify that KVM sets/clears OSXSAVE and OSKPKE according to CR4.XSAVE and CR4.PKE respectively. For performance reasons, KVM is responsible for emulating the architectural behavior of the OS CPUID bits tracking CR4. Reviewed-by: Maxim Levitsky Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/set_sregs_test.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/kvm/x86_64/set_sregs_test.c b/tools/te= sting/selftests/kvm/x86_64/set_sregs_test.c index 96fd690d479a..f4095a3d1278 100644 --- a/tools/testing/selftests/kvm/x86_64/set_sregs_test.c +++ b/tools/testing/selftests/kvm/x86_64/set_sregs_test.c @@ -85,6 +85,16 @@ static void test_cr_bits(struct kvm_vcpu *vcpu, uint64_t= cr4) rc =3D _vcpu_sregs_set(vcpu, &sregs); TEST_ASSERT(!rc, "Failed to set supported CR4 bits (0x%lx)", cr4); =20 + TEST_ASSERT(!!(sregs.cr4 & X86_CR4_OSXSAVE) =3D=3D + (vcpu->cpuid && vcpu_cpuid_has(vcpu, X86_FEATURE_OSXSAVE)), + "KVM didn't %s OSXSAVE in CPUID as expected", + (sregs.cr4 & X86_CR4_OSXSAVE) ? "set" : "clear"); + + TEST_ASSERT(!!(sregs.cr4 & X86_CR4_PKE) =3D=3D + (vcpu->cpuid && vcpu_cpuid_has(vcpu, X86_FEATURE_OSPKE)), + "KVM didn't %s OSPKE in CPUID as expected", + (sregs.cr4 & X86_CR4_PKE) ? "set" : "clear"); + vcpu_sregs_get(vcpu, &sregs); TEST_ASSERT(sregs.cr4 =3D=3D cr4, "sregs.CR4 (0x%llx) !=3D CR4 (0x%lx)", sregs.cr4, cr4); --=20 2.47.0.338.g60cca15819-goog