From patchwork Fri Jan 29 09:32:44 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: alvise rigo X-Patchwork-Id: 8161091 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6F0DE9F38B for ; Fri, 29 Jan 2016 09:41:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A954520375 for ; Fri, 29 Jan 2016 09:41:04 +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 AD80820374 for ; Fri, 29 Jan 2016 09:41:03 +0000 (UTC) Received: from localhost ([::1]:60774 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aP5Y7-0004Ub-57 for patchwork-qemu-devel@patchwork.kernel.org; Fri, 29 Jan 2016 04:41:03 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33750) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aP5Qc-0007oC-L5 for qemu-devel@nongnu.org; Fri, 29 Jan 2016 04:33:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aP5Qb-0000ZG-5I for qemu-devel@nongnu.org; Fri, 29 Jan 2016 04:33:18 -0500 Received: from mail-wm0-x235.google.com ([2a00:1450:400c:c09::235]:36807) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aP5Qa-0000Yv-UD for qemu-devel@nongnu.org; Fri, 29 Jan 2016 04:33:17 -0500 Received: by mail-wm0-x235.google.com with SMTP id p63so60025773wmp.1 for ; Fri, 29 Jan 2016 01:33:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtualopensystems-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=EoMfjJhvHReWwbn9gO+r94MfYfR+tNIiB7ATaw//UL8=; b=Q68wkQBx0/L5OexEpa+r1f2QTLoluQVtEBSnGYnUIksLyQpR/serpUkJHoatB8pzVd tDPdv55vmZ2H8huwtnDnqMBv6+NymG0Zc9sJBIfuQdFuTW55al56LPJmlheLowWUvqlp sJS4ivwLM5AvQ1RtWXf9MGLWQIMExPvSDmo75Q/DfZ2xe8oJA4UfOnHsTdLZzRkencqz sRePxbLdQBu6v8Ww3qrUROoHNSMNGgZa7P1ZH9abprOi+BxQIDGSPqQ8pHGIyjbRlEex H7D8yF04d3ZFztqIlYaUEDZFiZDEeC/h2xIIkvOL6vkZXjwZS00OYeq9JeqiyqNI0s+A t6RQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=EoMfjJhvHReWwbn9gO+r94MfYfR+tNIiB7ATaw//UL8=; b=mIJ6NZoQDp0WImml5OSQPepbeHwVgwRQHrlloaCCnRbcNOqgu5E8yGfyduLkr9tBnO KrDibWUp4a7mUkjyIYxJD4sitKxS2J/CRmxmJ3ELD04hKZWpkjsMUsI7Iw83tPk4XGdW WV08ks2uH5MubfBUtL/26VzVokVczzYoNyYFuKy4arEeYXG+e8gKU2V8kNy5mBOi4inq 9d26iYDUmGQn9hBoECiiYXMM+FOl9ZvvG1Z7HEsH5RQ8CeYGkruuiNn9nOeCSP/BYl1c KJwI96MycpevchuKWuM8V/bU8qw85iE89RRAYu3O76erEcQffmNB0K7UNY0m83JeOQ6g N8jw== X-Gm-Message-State: AG10YOTgKYVPMI39uZDzJexfwuRme8OJmID9OWUDXkac7/rRxlDF2+QPD9crFmoYG9b3LA== X-Received: by 10.28.20.83 with SMTP id 80mr8225983wmu.89.1454059996303; Fri, 29 Jan 2016 01:33:16 -0800 (PST) Received: from localhost.localdomain (LPuteaux-656-1-278-113.w80-15.abo.wanadoo.fr. [80.15.154.113]) by smtp.googlemail.com with ESMTPSA id o7sm14765451wjf.45.2016.01.29.01.33.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Jan 2016 01:33:15 -0800 (PST) From: Alvise Rigo To: qemu-devel@nongnu.org, mttcg@listserver.greensocs.com Date: Fri, 29 Jan 2016 10:32:44 +0100 Message-Id: <1454059965-23402-16-git-send-email-a.rigo@virtualopensystems.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1454059965-23402-1-git-send-email-a.rigo@virtualopensystems.com> References: <1454059965-23402-1-git-send-email-a.rigo@virtualopensystems.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:400c:c09::235 Cc: claudio.fontana@huawei.com, pbonzini@redhat.com, jani.kokkonen@huawei.com, tech@virtualopensystems.com, alex.bennee@linaro.org, rth@twiddle.net Subject: [Qemu-devel] [RFC v7 15/16] target-arm: cpu64: use custom set_excl hook 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=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham 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 In aarch64 the LDXP/STXP instructions allow to perform up to 128 bits exclusive accesses. However, due to a softmmu limitation, such wide accesses are not allowed. To workaround this limitation, we need to support LoadLink instructions that cover at least 128 consecutive bits (see the next patch for more details). Suggested-by: Jani Kokkonen Suggested-by: Claudio Fontana Signed-off-by: Alvise Rigo Reviewed-by: Alex Bennée --- target-arm/cpu64.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target-arm/cpu64.c b/target-arm/cpu64.c index cc177bb..1d45e66 100644 --- a/target-arm/cpu64.c +++ b/target-arm/cpu64.c @@ -287,6 +287,13 @@ static void aarch64_cpu_set_pc(CPUState *cs, vaddr value) } } +static void aarch64_set_excl_range(CPUState *cpu, hwaddr addr, hwaddr size) +{ + cpu->excl_protected_range.begin = addr; + /* At least cover 128 bits for a STXP access (two paired doublewords case)*/ + cpu->excl_protected_range.end = addr + 16; +} + static void aarch64_cpu_class_init(ObjectClass *oc, void *data) { CPUClass *cc = CPU_CLASS(oc); @@ -297,6 +304,7 @@ static void aarch64_cpu_class_init(ObjectClass *oc, void *data) cc->gdb_write_register = aarch64_cpu_gdb_write_register; cc->gdb_num_core_regs = 34; cc->gdb_core_xml_file = "aarch64-core.xml"; + cc->cpu_set_excl_protected_range = aarch64_set_excl_range; } static void aarch64_cpu_register(const ARMCPUInfo *info)