From nobody Sun Apr 5 21:16:09 2026 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (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 63645239567 for ; Tue, 24 Feb 2026 00:55:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771894521; cv=none; b=X2+iqv/3tI1WnqggaMJrO2/uzTWpnqJ0ZqaRY354qW8sM4PP6/oN73XieBvPSpWYRuq0tUgVHm/e/vt3cfSuEeudIXEUZm3AZahL5dB1oNWr+aOgRp3JdIz8zl9zaegNIETi36tSmZ8QlH1+tZjZtmy1rEY06UM1Q0It8UIsxOA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771894521; c=relaxed/simple; bh=cN5NunlFvoGOAe6HoYHTXV75STvfy1Ko7x7rssTBKYM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=T2MROOIa2JBWZn2H+1IPT2nuD2veE8sH8b8zOJ9ULq/CHUqerIpJl4NRToYsDjwDoDTaTL+nRAVhLld1mJcY7LXFvzL66laf7JJb1xNtnKgoiZ0CloB+6XUX44OyKO2T5zCVPWShpmnzWT/CSVmO8VXbjhk335gghn7DlAjYaDw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jmattson.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=0gQxFBfT; arc=none smtp.client-ip=209.85.215.201 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--jmattson.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="0gQxFBfT" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-c6e1dab2328so21699104a12.0 for ; Mon, 23 Feb 2026 16:55:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1771894518; x=1772499318; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=wFzHPQE8L/64zORmW1YjNFU61I5i8m5XPko55YlqUjg=; b=0gQxFBfTrhUpLUMtIZlx0iylDB4SQ4bJ/LejYfp9peUwgXo5brzz5mBOAlK1LyxkUQ a4YFhBlS87AUDctkxOHUbN1XFpRiWjo75mNfnG484aC4Q8eNopiKCANv6pvvHffbG/Vh H0q0id78A+LTew2r1X8MZ9pSvjAwsxeyhSCxV9SrLSEYCoOl9n7P+7194Y0Yxa67L4t7 DGI6Jw5kZKa5QjenCllnh8dqEshoG1PfCI2TcswwFkca09+BoCcxmhp58BiIi9WvhoMc mZhO/9udhkMucbrRaKWzoi/GunucukAqnwXZAKaig0GLrA6Oupch12vDBBhNmFszf/Ps nKsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771894518; x=1772499318; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=wFzHPQE8L/64zORmW1YjNFU61I5i8m5XPko55YlqUjg=; b=oYY21/bn+PAHo1vDhlVxwwW/UEc4I2RpXebpxo6LrayKAOKTj96s9OQVdFDIM2ayUT ejropbyfeZQDC2LaH26CIOWMqFE2twdUts+B7ysqXWLMpNeOloKhvc3MBq0b/YQxXBL3 LhiHlgiUr3xyovP72Cb95e0WxKXWnWY1suDrFL0Yt9jv+GlGUohVhSPQmO9bRGzMhtm3 A9dXcNeRpsAMCFr2qYEPqmkQG7TBfuOzHO+pAfT4TTJ9UmqCo74bWpReYeAZDGNmqDWJ 0Wzc4sJpydTdnlMVbAzdPZGPwGQKzWoH8/1RRp49A51ZIf8113PTRCW5o5XFItUFhFIZ ASeA== X-Forwarded-Encrypted: i=1; AJvYcCVE2LxHLltqYqWksTww3SQpBZgiKxU7X7astFCeOVlIFpCsIqSC9HTacrl+gpgwS+TOAG1TWn9YcNKYgkg=@vger.kernel.org X-Gm-Message-State: AOJu0YxbmV7g9rezX0HdyJM0PV034N5OVlIsqXsyj3KeEMnKNKkbiTC+ xZYvBA1rX8g4zQHIEE0FgEYn4oqeqZXIBu3Z04finwOE4TGL6FiL9Kw/s8/A9qsbwtQ1KJpbqE8 uiJeT81fIpSAYkg== X-Received: from pgkm14.prod.google.com ([2002:a63:ed4e:0:b0:c63:55bd:18f0]) (user=jmattson job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:94cf:b0:393:7575:a8c7 with SMTP id adf61e73a8af0-39545e3994fmr10015601637.19.1771894517673; Mon, 23 Feb 2026 16:55:17 -0800 (PST) Date: Mon, 23 Feb 2026 16:54:44 -0800 In-Reply-To: <20260224005500.1471972-1-jmattson@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260224005500.1471972-1-jmattson@google.com> X-Mailer: git-send-email 2.53.0.371.g1d285c8824-goog Message-ID: <20260224005500.1471972-7-jmattson@google.com> Subject: [PATCH v5 06/10] KVM: x86: Remove common handling of MSR_IA32_CR_PAT From: Jim Mattson To: Sean Christopherson , Paolo Bonzini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Shuah Khan , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Yosry Ahmed Cc: Jim Mattson Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" SVM now has completely independent handling of MSR_IA32_CR_PAT in svm_get_msr() and svm_set_msr(). To avoid any confusion, move the logic for MSR_IA32_CR_PAT from kvm_get_msr_common() and kvm_set_msr_common() into vmx_get_msr() and vmx_set_msr(). Signed-off-by: Jim Mattson --- arch/x86/kvm/vmx/vmx.c | 9 ++++++--- arch/x86/kvm/x86.c | 9 --------- 2 files changed, 6 insertions(+), 12 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 967b58a8ab9d..f5127dbd9104 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -2146,6 +2146,9 @@ int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_dat= a *msr_info) !(vcpu->arch.arch_capabilities & ARCH_CAP_TSX_CTRL_MSR)) return 1; goto find_uret_msr; + case MSR_IA32_CR_PAT: + msr_info->data =3D vcpu->arch.pat; + break; case MSR_IA32_UMWAIT_CONTROL: if (!msr_info->host_initiated && !vmx_has_waitpkg(vmx)) return 1; @@ -2468,10 +2471,10 @@ int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_d= ata *msr_info) return 1; goto find_uret_msr; case MSR_IA32_CR_PAT: - ret =3D kvm_set_msr_common(vcpu, msr_info); - if (ret) - break; + if (!kvm_pat_valid(data)) + return 1; =20 + vcpu->arch.pat =3D data; if (is_guest_mode(vcpu) && get_vmcs12(vcpu)->vm_exit_controls & VM_EXIT_SAVE_IA32_PAT) get_vmcs12(vcpu)->guest_ia32_pat =3D data; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 416899b5dbe4..41936f83a17f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4025,12 +4025,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct= msr_data *msr_info) return 1; } break; - case MSR_IA32_CR_PAT: - if (!kvm_pat_valid(data)) - return 1; - - vcpu->arch.pat =3D data; - break; case MTRRphysBase_MSR(0) ... MSR_MTRRfix4K_F8000: case MSR_MTRRdefType: return kvm_mtrr_set_msr(vcpu, msr, data); @@ -4436,9 +4430,6 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct = msr_data *msr_info) msr_info->data =3D kvm_scale_tsc(rdtsc(), ratio) + offset; break; } - case MSR_IA32_CR_PAT: - msr_info->data =3D vcpu->arch.pat; - break; case MSR_MTRRcap: case MTRRphysBase_MSR(0) ... MSR_MTRRfix4K_F8000: case MSR_MTRRdefType: --=20 2.53.0.371.g1d285c8824-goog