From nobody Fri Apr 4 06:28:09 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 174201956336368.06556325854626; Fri, 14 Mar 2025 23:19:23 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ttKr8-000330-3U; Sat, 15 Mar 2025 02:18:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ttKqu-0002va-Rn; Sat, 15 Mar 2025 02:18:39 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ttKqr-0003Bb-CQ; Sat, 15 Mar 2025 02:18:31 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 6CCBBFF9CE; Sat, 15 Mar 2025 09:17:07 +0300 (MSK) Received: from gandalf.tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with ESMTP id 444B81CAC37; Sat, 15 Mar 2025 09:18:01 +0300 (MSK) Received: by gandalf.tls.msk.ru (Postfix, from userid 1000) id 2FCF3558B3; Sat, 15 Mar 2025 09:18:01 +0300 (MSK) From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Peter Maydell , Richard Henderson , Michael Tokarev Subject: [Stable-9.2.3 02/51] target/arm: Report correct syndrome for UNDEFINED AT ops with wrong NSE, NS Date: Sat, 15 Mar 2025 09:17:08 +0300 Message-Id: <20250315061801.622606-2-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1742019570507019100 Content-Type: text/plain; charset="utf-8" From: Peter Maydell R_NYXTL says that these AT insns should be UNDEFINED if they would operate on an EL lower than EL3 and SCR_EL3.{NSE,NS} is set to the Reserved {1, 0}. We were incorrectly reporting them with the wrong syndrome; use CP_ACCESS_TRAP_UNCATEGORIZED so they are reported as UNDEFINED. Cc: qemu-stable@nongnu.org Fixes: 1acd00ef1410 ("target/arm/helper: Check SCR_EL3.{NSE, NS} encoding f= or AT instructions") Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20250130182309.717346-3-peter.maydell@linaro.org (cherry picked from commit 1960d9701ef7ed8d24e98def767bbf05d63e6992) Signed-off-by: Michael Tokarev diff --git a/target/arm/helper.c b/target/arm/helper.c index 8a0065ef60..32cf6039e3 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -3868,7 +3868,7 @@ static CPAccessResult at_e012_access(CPUARMState *env= , const ARMCPRegInfo *ri, * scr_write() ensures that the NSE bit is not set otherwise. */ if ((env->cp15.scr_el3 & (SCR_NSE | SCR_NS)) =3D=3D SCR_NSE) { - return CP_ACCESS_TRAP; + return CP_ACCESS_TRAP_UNCATEGORIZED; } return CP_ACCESS_OK; } --=20 2.39.5