From nobody Tue Feb 10 02:59:23 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 11FC4472771 for ; Thu, 22 Jan 2026 04:58:02 +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=1769057884; cv=none; b=NNCBcNlS1bpzMIslom+hJgGqqx/UvwU9e8hfItXSXctBH9Dv4zDDEjtjhMqSf8vJnmPtxDcCoySeP0sJ3AOJwxXiXani6iGYiJrK1udz+NsoupTpT2SaTC7D8iOzgu0D7x/NGHzpoG/DMW43PBgwbs2oyjuB+4QPXKQ6XFdEEDo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769057884; c=relaxed/simple; bh=fQr99uM8I060YIwTDdLf//h+zn/VH/xy75rpl5pjh0Q=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=XvIQyZKRBFqI3hVz0eml7uzBMnnRMuynLSv2VMV8xzy8bhmMd+ire5ZqjMIMOxPYwRBKRvza2UENba88bYFc0osrPGBzCYrDvex4x8Fn/tY5EgNw9w5XAt5RmJ2UHdcvNFFW+wT3Va9bBaSGShq9kCVVqGPUk15iSSSzPk19ZIU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--chengkev.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=cxkn2XIn; 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--chengkev.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="cxkn2XIn" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-c337375d953so316291a12.3 for ; Wed, 21 Jan 2026 20:58:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1769057882; x=1769662682; 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=ukX4ACJbiwYdjP9Kah8t9CaWJb7aftnI6HG33S8HCmc=; b=cxkn2XInHF/kBfBlsP0Y0Fq1quar1/xES0xuTaXbaNK71nYPKB1eVa0eD57fw6bsW+ /T0Zz6UGQdr/zcziS+QCo4mKcBNjeYKknI9T28B+Sn68yQ2U0Pb6yc25iEtR9BAAVFwt h2wmhsoNwAsfH1wKMaPMoKOHQcsNx7XqozwefOIjRymQpQqPtkF32gMs0BbVCLL8pUjW mQ2K4EiFfs5e9ipaLWhAKH9JsICtNBduqCR7lfUyNeMfgrCy7hSU5DlVnZuXQ4xG3U55 G9Vq6rxv08/excgWhollH9zNmHRQC2XbYF+JhMc3qaWqszYiyeXteQsfZQx+DwV7cIky XJGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769057882; x=1769662682; 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=ukX4ACJbiwYdjP9Kah8t9CaWJb7aftnI6HG33S8HCmc=; b=lRWilACgFQNaXK1t+bXp0ZQxq6RSJTgSTkUhPWjxuAAE5Kv5HvUA8GYZ4a1r47eVTk toVh33evjnm0aVvZvIwl4xrkmYwvIGWZn0MCl64UDNzPAOcBSYGxeZQ57iaB/2wnC6i6 y+JALGZc6sZQpQmnSELZFVgnBntzir63VMVBAMzcpeuFGNZ8mJ0vUbnfjGYVBHTHBKPw fuuNTopHWc7aBUm6ZZw5aowsQ9oXx33T30ipCeNga1xl6BF+ljKBIW9RZ6GxiU51F+me 2QvWkRvg84BqHVMBYwbnwrdD/gYmZTFRlvmVTyo/Pv9fwuk9ZlJntCvPqPMFOmjcZ9bc 3icw== X-Forwarded-Encrypted: i=1; AJvYcCV2evLeqQDN1eXaJ5VnG0zkQyMY2n1Ax7ggSnl28Ozk2wXfDHUZiiZgPrxa4UIXdaWjAhxEpqX3wi2VGNE=@vger.kernel.org X-Gm-Message-State: AOJu0YzxtgBxqEgSZdHJFCy2Apr5/XCOXF62TmSJz90udOL+DxdVj1Cr PLkqEtudLEDxWq/K5EOXuQNSgS+tfp/eKjuMEwkrO6lxdFqMMgtC+xh53n49iKo5WKctXPJ/nz9 NW0VBVtzBMylpng== X-Received: from pgbdm5.prod.google.com ([2002:a05:6a02:d85:b0:c1d:ec5f:ada2]) (user=chengkev job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:3984:b0:38d:eeca:b330 with SMTP id adf61e73a8af0-38e00d1557amr19997302637.40.1769057882138; Wed, 21 Jan 2026 20:58:02 -0800 (PST) Date: Thu, 22 Jan 2026 04:57:52 +0000 In-Reply-To: <20260122045755.205203-1-chengkev@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260122045755.205203-1-chengkev@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260122045755.205203-4-chengkev@google.com> Subject: [PATCH V3 3/5] KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0 From: Kevin Cheng To: seanjc@google.com, pbonzini@redhat.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, yosry.ahmed@linux.dev, Kevin Cheng Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" INVLPGA should cause a #UD when EFER.SVME is not set. Add a check to properly inject #UD when EFER.SVME=3D0. Signed-off-by: Kevin Cheng Reviewed-by: Yosry Ahmed --- arch/x86/kvm/svm/svm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index e6b1f8fa98a20..d3d7daf886b29 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2320,6 +2320,9 @@ static int invlpga_interception(struct kvm_vcpu *vcpu) gva_t gva =3D kvm_rax_read(vcpu); u32 asid =3D kvm_rcx_read(vcpu); =20 + if (nested_svm_check_permissions(vcpu)) + return 1; + /* FIXME: Handle an address size prefix. */ if (!is_long_mode(vcpu)) gva =3D (u32)gva; --=20 2.52.0.457.g6b5491de43-goog