From nobody Mon Feb 9 18:46:18 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1513184161852804.1372730059533; Wed, 13 Dec 2017 08:56:01 -0800 (PST) Received: from localhost ([::1]:36333 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ePAK0-00055D-6F for importer@patchew.org; Wed, 13 Dec 2017 11:55:52 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59411) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ePAGj-0002MM-Fr for qemu-devel@nongnu.org; Wed, 13 Dec 2017 11:52:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ePAGi-0004Ms-Or for qemu-devel@nongnu.org; Wed, 13 Dec 2017 11:52:29 -0500 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:39072) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ePAGg-0004Ee-66; Wed, 13 Dec 2017 11:52:26 -0500 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1ePAGe-0007Oi-Ec; Wed, 13 Dec 2017 16:52:24 +0000 From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Date: Wed, 13 Dec 2017 16:52:21 +0000 Message-Id: <1513183941-24300-3-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513183941-24300-1-git-send-email-peter.maydell@linaro.org> References: <1513183941-24300-1-git-send-email-peter.maydell@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:8b0:1d0::2 Subject: [Qemu-devel] [PATCH 2/2] hw/intc/arm_gic: reserved register addresses are RAZ/WI X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ard Biesheuvel , Laszlo Ersek , patches@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The GICv2 specification says that reserved register addresses must RAZ/WI; now that we implement external abort handling for Arm CPUs this means we must return MEMTX_OK rather than MEMTX_ERROR, to avoid generating a spurious guest data abort. Signed-off-by: Peter Maydell Reviewed-by: Alistair Francis --- hw/intc/arm_gic.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c index 5a0e2a3..d701e49 100644 --- a/hw/intc/arm_gic.c +++ b/hw/intc/arm_gic.c @@ -1261,7 +1261,8 @@ static MemTxResult gic_cpu_read(GICState *s, int cpu,= int offset, default: qemu_log_mask(LOG_GUEST_ERROR, "gic_cpu_read: Bad offset %x\n", (int)offset); - return MEMTX_ERROR; + *data =3D 0; + break; } return MEMTX_OK; } @@ -1329,7 +1330,7 @@ static MemTxResult gic_cpu_write(GICState *s, int cpu= , int offset, default: qemu_log_mask(LOG_GUEST_ERROR, "gic_cpu_write: Bad offset %x\n", (int)offset); - return MEMTX_ERROR; + return MEMTX_OK; } gic_update(s); return MEMTX_OK; --=20 2.7.4