From nobody Thu Apr 2 20:25:31 2026 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 7D209410D38 for ; Thu, 26 Mar 2026 17:50:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774547415; cv=none; b=fjbNb2MiwonnM/yv9i3QzBDvn7T3CL0vn+7m/VJvJCQYqipxGOIahf4LrH4BWNlU9XRiAM8N06+YTWMff9nRUV0b2hm/6UFBeX/ga6129UxnHxIBGk43/pcREulR6X4ZbIkCccKgC4Jd+i+Z7ZJUg5ZCIxvuw17TfJmjtFGx3Gk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774547415; c=relaxed/simple; bh=BujWcctDq6eMuBK2P/8WUsaw3dQtOodTquIl5Xa9hFY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=plQfULjAEGx+PpdhkjDwCR8I8CGkemHhWeGNHT6iW9sLGfp5BL0tuBAVy1/B6Z/eugV21lqFBEYhwEoRvPEch0t4LsoJIXwNvRCtr9jCyi+219ns3ApaXcCQ2afr1LLYkFTuLoMTigXw+U6ps364KonOpYDm79AZKLiOQJ67MmI= 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=kenaLQ/U; arc=none smtp.client-ip=209.85.214.202 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--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="kenaLQ/U" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-2adc527eaf5so10669635ad.0 for ; Thu, 26 Mar 2026 10:50:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1774547409; x=1775152209; 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=tLQEnswVcn2VF9Qdewg1FETHaeEFo8aaED/NYmj5Qz0=; b=kenaLQ/UIGY8iguqyNs5tNy+AcnSO/Cym/YJy2S//tVjmP7yPlOtfcmBmTm82Vq6pU GP5NHyVjB1W2KTzn+TBE/6a2wpHqlI4aCdaOh8WA01Ylnnjn/gQ27yKH9eo58aGzrSbM 48KRP44gjO16xdrFFhnrhv86/47cMynrlN3TtMQBEBWzDsdFN3UBpgdQTZD1miZiTeyT J+zNaum7by4FLaUcpjdzJWbA1yYx1cK4jGYnCMCorPvrw3Xs7Ru9IZs67qefiOiX7OXB AZXrtlw6Mm0110KQIwFlRVEno8bEeSzelo0v3bnyLl6ysEJiHCpPx9WFv0/4tOhWdOhA IvoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774547409; x=1775152209; 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=tLQEnswVcn2VF9Qdewg1FETHaeEFo8aaED/NYmj5Qz0=; b=T9gKSdDuzlYWeNKvUZrObshLdP31lKHlTlkFuECtXApYkbGNa6oq3JYrh8aZ2wQZ/4 IYxqXwmkr7XmRcZIf11SmM0cjBb3b9HeahLtz40O+UV+fq4nEbGR2HStei03F4ACdDtP gkpxuBuS3TA+xQtCXeg7OTUng8ltM+8X3otZYD+MLc+xVm/2Te4CpEBQRunRQqj07wVY YIqSe7qbw9PUusIx0J+g+BNkDJE2RGmACy5OyaH/XN40dy/iXHH0NOa8xegti6rUNeXT vodNKU1Tq5fCLvxmbxO6pJWzYhpsS9fbmyXhobhct/i+n7dFToj3rqVNFrlsdJDuNDMn s6lQ== X-Forwarded-Encrypted: i=1; AJvYcCWvmVUldqWFAQMaggmbteDtVMV+925p/IrVXfJYEgU+h395hjcXfWBi9kpIKdVoTzWGj5EhGi9EX4LGltM=@vger.kernel.org X-Gm-Message-State: AOJu0Yzv32VSdlKTXxCxJqGkNW3fKz5KvI5l5nRgHJvQ0t8KR/RGybCl 4nAJGUOR6f5vsQdqo35O7iOWLP7cCE8Fr8da8FoUnB2BxbTT5x1QaevRaHKamk1wpPqz992tw1z prLDmG3u30daztA== X-Received: from pli5.prod.google.com ([2002:a17:902:c105:b0:2b0:495c:f3ec]) (user=jmattson job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:d501:b0:2b0:b1e2:583 with SMTP id d9443c01a7336-2b0b1e22151mr92551175ad.2.1774547409214; Thu, 26 Mar 2026 10:50:09 -0700 (PDT) Date: Thu, 26 Mar 2026 10:49:24 -0700 In-Reply-To: <20260326174944.3820245-1-jmattson@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260326174944.3820245-1-jmattson@google.com> X-Mailer: git-send-email 2.53.0.1018.g2bb0e51243-goog Message-ID: <20260326174944.3820245-7-jmattson@google.com> Subject: [PATCH v6 06/10] KVM: x86: Remove common handling of MSR_IA32_CR_PAT From: Jim Mattson To: Paolo Bonzini , Jonathan Corbet , Shuah Khan , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , kvm@vger.kernel.org, linux-doc@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 b15b4662b653..d87585a42736 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -2110,6 +2110,9 @@ 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; @@ -2432,10 +2435,10 @@ 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 0b5d48e75b65..56857da9bda6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4024,12 +4024,6 @@ 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); @@ -4435,9 +4429,6 @@ 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 2.53.0.1018.g2bb0e51243-goog