From patchwork Wed Feb 3 18:59:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 8208041 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 36E98BEEE5 for ; Wed, 3 Feb 2016 19:05:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9C81D2027D for ; Wed, 3 Feb 2016 19:05:35 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E708420266 for ; Wed, 3 Feb 2016 19:05:34 +0000 (UTC) Received: from localhost ([::1]:37139 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aR2kA-0005kR-9D for patchwork-qemu-devel@patchwork.kernel.org; Wed, 03 Feb 2016 14:05:34 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38059) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aR2eL-0003sW-U1 for qemu-devel@nongnu.org; Wed, 03 Feb 2016 13:59:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aR2eL-0001Av-0U for qemu-devel@nongnu.org; Wed, 03 Feb 2016 13:59:33 -0500 Received: from mnementh.archaic.org.uk ([2001:8b0:1d0::1]:57190) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aR2eK-00018I-Q0 for qemu-devel@nongnu.org; Wed, 03 Feb 2016 13:59:32 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.84) (envelope-from ) id 1aR2e8-0003Dy-Rc for qemu-devel@nongnu.org; Wed, 03 Feb 2016 18:59:20 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Wed, 3 Feb 2016 18:59:09 +0000 Message-Id: <1454525960-12335-7-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1454525960-12335-1-git-send-email-peter.maydell@linaro.org> References: <1454525960-12335-1-git-send-email-peter.maydell@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:8b0:1d0::1 Subject: [Qemu-devel] [PULL 06/17] target-arm: Implement the S2 MMU inputsize > pamax check X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: "Edgar E. Iglesias" Implement the inputsize > pamax check for Stage 2 translations. This is CONSTRAINED UNPREDICTABLE and we choose to fault. Signed-off-by: Edgar E. Iglesias Reviewed-by: Alex Bennée Message-id: 1453932970-14576-4-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell --- target-arm/helper.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target-arm/helper.c b/target-arm/helper.c index 31ff650..5ea507f 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -6790,6 +6790,7 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, } if (is_aa64) { + CPUARMState *env = &cpu->env; unsigned int pamax = arm_pamax(cpu); switch (stride) { @@ -6811,6 +6812,13 @@ static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, default: g_assert_not_reached(); } + + /* Inputsize checks. */ + if (inputsize > pamax && + (arm_el_is_aa64(env, 1) || inputsize > 40)) { + /* This is CONSTRAINED UNPREDICTABLE and we choose to fault. */ + return false; + } } else { /* AArch32 only supports 4KB pages. Assert on that. */ assert(stride == 9);