Message ID | 20231201131601.1146971-2-magali.lemes@canonical.com |
---|---|
State | New |
Headers | show
Return-Path: <kernel-team-bounces@lists.ubuntu.com> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com (client-ip=185.125.189.65; helo=lists.ubuntu.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=patchwork.ozlabs.org) Received: from lists.ubuntu.com (lists.ubuntu.com [185.125.189.65]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4ShYVL4Cntz23nT for <incoming@patchwork.ozlabs.org>; Sat, 2 Dec 2023 00:16:25 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=lists.ubuntu.com) by lists.ubuntu.com with esmtp (Exim 4.86_2) (envelope-from <kernel-team-bounces@lists.ubuntu.com>) id 1r93NP-00082k-55; Fri, 01 Dec 2023 13:16:15 +0000 Received: from smtp-relay-internal-1.internal ([10.131.114.114] helo=smtp-relay-internal-1.canonical.com) by lists.ubuntu.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from <magali.lemes@canonical.com>) id 1r93NJ-000826-W3 for kernel-team@lists.ubuntu.com; Fri, 01 Dec 2023 13:16:10 +0000 Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) (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 smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id BE2103F18B for <kernel-team@lists.ubuntu.com>; Fri, 1 Dec 2023 13:16:09 +0000 (UTC) Received: by mail-pg1-f198.google.com with SMTP id 41be03b00d2f7-5c624e68b45so540818a12.3 for <kernel-team@lists.ubuntu.com>; Fri, 01 Dec 2023 05:16:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701436567; x=1702041367; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=vi5KXcgTvaEwdxeLHFCOsG77TuLrAEFqjwdwNiffqlE=; b=J4NonLT3o5jjbnndrN/rikKxd0yDdxQmzSBkPD/yjveXyNG7vCCoUMxxmodKBniUY/ nspjK71pn+aADyVnDTPfzXP5d9kpGAuoboYryYN6e5fwqs9pJGGU/DnwSS+B5Br6e141 d6vjc3t+3cLxLBLmTHok1z4Hi6ieiSOFlbuY0lubzsOMyna1X6rZXfaWItTLC5/2K24w ejISZwOx/KIx2vvqTv2U+TOZtz5uJ3n4TIJYbRBvfxdWymDKCGb68R4zVO4xBmo/oZJ3 9fryGL0XHTqqPQyIjXKmGf8k1AJaBei5ztE2uTiwxNRQwp+Th+WymRJdBV5663K2ZfWL emSQ== X-Gm-Message-State: AOJu0YztuNewzaofgFmgldX9KnkgMXsofOKRsGJ3Zr+weVfiHtNgWYyG 15Z7ZxfpAIepWF4iKDPoZj9LBg/BlRflORAZhRDf6Yi0a/rT/seBKKInCzUDczrXdiUWtgTutj2 3dZQNJbwQjo7oX7hh003zkBRFBzVegZrsUdZzum3dEucJ94Kd/w== X-Received: by 2002:a05:6a21:33a2:b0:18b:9031:822a with SMTP id yy34-20020a056a2133a200b0018b9031822amr29696412pzb.46.1701436567291; Fri, 01 Dec 2023 05:16:07 -0800 (PST) X-Google-Smtp-Source: AGHT+IHZfPwb2y/IStr2XLCWPJAmZ9Zc8pYdng3AuDR5BX6uLzVd2zpEXxiac3hjeRxC7tOcYG0u6Q== X-Received: by 2002:a05:6a21:33a2:b0:18b:9031:822a with SMTP id yy34-20020a056a2133a200b0018b9031822amr29696386pzb.46.1701436566920; Fri, 01 Dec 2023 05:16:06 -0800 (PST) Received: from magali.. ([2804:7f0:b442:2377:dd30:3fac:53f2:e6fd]) by smtp.gmail.com with ESMTPSA id fb3-20020a056a002d8300b006bde2480806sm2978028pfb.47.2023.12.01.05.16.05 for <kernel-team@lists.ubuntu.com> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Dec 2023 05:16:06 -0800 (PST) From: Magali Lemes <magali.lemes@canonical.com> To: kernel-team@lists.ubuntu.com Subject: [SRU][Jammy][PATCH 1/3] x86/sev: Disable MMIO emulation from user mode Date: Fri, 1 Dec 2023 10:15:55 -0300 Message-Id: <20231201131601.1146971-2-magali.lemes@canonical.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231201131601.1146971-1-magali.lemes@canonical.com> References: <20231201131601.1146971-1-magali.lemes@canonical.com> MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions <kernel-team.lists.ubuntu.com> List-Unsubscribe: <https://lists.ubuntu.com/mailman/options/kernel-team>, <mailto:kernel-team-request@lists.ubuntu.com?subject=unsubscribe> List-Archive: <https://lists.ubuntu.com/archives/kernel-team> List-Post: <mailto:kernel-team@lists.ubuntu.com> List-Help: <mailto:kernel-team-request@lists.ubuntu.com?subject=help> List-Subscribe: <https://lists.ubuntu.com/mailman/listinfo/kernel-team>, <mailto:kernel-team-request@lists.ubuntu.com?subject=subscribe> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" <kernel-team-bounces@lists.ubuntu.com> |
Series |
[SRU,Jammy,1/3] x86/sev: Disable MMIO emulation from user mode
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diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index d19d3154a290..a564e319760b 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -1004,6 +1004,9 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, enum es_result ret; long *reg_data; + if (user_mode(ctxt->regs)) + return ES_UNSUPPORTED; + switch (insn->opcode.bytes[0]) { /* MMIO Write */ case 0x88: