From nobody Sun Feb 8 21:47:15 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 0059517C9AF for ; Thu, 15 Aug 2024 12:34:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723725264; cv=none; b=bh48JZMYGLSS06J+LcnOPdV2TBjEdLPetSm0xi/Wt6P6Hf112CU+zKbR1tgiQ01TNcwe4txJ+4tG+Ku3Kk3Df4VzDBWvvkDg5YlplFLwGVLzJ5qfeuvArgjn/EN3ztlQoqqPWf6fQCMTC6Fk4hSoUabb5qg93JQxyZH8+3dg71k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723725264; c=relaxed/simple; bh=qA/vjHiFuW33Gns/1do2oaIyFzXBTSLeYtUza0ruWTA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dGvTc9C64opdN3Gi175DWwfdr/3W0AmbXaL2jTSroJV1UEUoPBDclARmJlHK2OALPtfZMNZ5vPumjitIlMkLP+d2jsbSn0g8kkGmG7O+b7WqyJb7sjhZl0U1GNPAHIOV04917dYh1yC5fNY5D0UCnpjhLxuKPgnr9RauAf39p48= 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=cHTp1xqD; arc=none smtp.client-ip=170.10.133.124 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="cHTp1xqD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1723725262; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5zYUq9vCVBL/ellLmExJameIYyfLb7npz24FshDuo5o=; b=cHTp1xqDJnHUwn+tfSeaTtgAEbXrirQGo+XvucaVDK/k3N/vr5A5e/aFNnM3zUHT4eqk5M LC5M5A27ppU7RJL7mlIXACawnhCAcCmkXxnHmIteyW2yIwa9rt9FRcBBY9doQW84mtdugQ lUFpmzc/9GYki72x1qD8V8HEZmeoAWE= Received: from mx-prod-mc-04.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-656-l6v2RgwSPcWBheuRwWqcqA-1; Thu, 15 Aug 2024 08:34:17 -0400 X-MC-Unique: l6v2RgwSPcWBheuRwWqcqA-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 66E991956048; Thu, 15 Aug 2024 12:34:15 +0000 (UTC) Received: from intellaptop.lan (unknown [10.47.238.120]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id F007C300019C; Thu, 15 Aug 2024 12:34:10 +0000 (UTC) From: Maxim Levitsky To: kvm@vger.kernel.org Cc: Ingo Molnar , x86@kernel.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Dave Hansen , Borislav Petkov , linux-kernel@vger.kernel.org, "H. Peter Anvin" , Maxim Levitsky Subject: [PATCH v3 2/4] KVM: x86: add X86_FEATURE_LA57 to governed_features Date: Thu, 15 Aug 2024 15:33:47 +0300 Message-Id: <20240815123349.729017-3-mlevitsk@redhat.com> In-Reply-To: <20240815123349.729017-1-mlevitsk@redhat.com> References: <20240815123349.729017-1-mlevitsk@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 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" Guest support for X86_FEATURE_LA57 will need to be tested to determine canonical width check for nested VMX VM entries. Signed-off-by: Maxim Levitsky --- arch/x86/kvm/cpuid.c | 2 ++ arch/x86/kvm/governed_features.h | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 2617be544480..1a2d3fbe9a59 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -373,6 +373,8 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *v= cpu) if (allow_gbpages) kvm_governed_feature_set(vcpu, X86_FEATURE_GBPAGES); =20 + kvm_governed_feature_check_and_set(vcpu, X86_FEATURE_LA57); + best =3D kvm_find_cpuid_entry(vcpu, 1); if (best && apic) { if (cpuid_entry_has(best, X86_FEATURE_TSC_DEADLINE_TIMER)) diff --git a/arch/x86/kvm/governed_features.h b/arch/x86/kvm/governed_featu= res.h index ad463b1ed4e4..475171f2fd49 100644 --- a/arch/x86/kvm/governed_features.h +++ b/arch/x86/kvm/governed_features.h @@ -17,6 +17,7 @@ KVM_GOVERNED_X86_FEATURE(PFTHRESHOLD) KVM_GOVERNED_X86_FEATURE(VGIF) KVM_GOVERNED_X86_FEATURE(VNMI) KVM_GOVERNED_X86_FEATURE(LAM) +KVM_GOVERNED_X86_FEATURE(LA57) =20 #undef KVM_GOVERNED_X86_FEATURE #undef KVM_GOVERNED_FEATURE --=20 2.40.1