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GET /api/1.2/patches/810722/?format=api
{ "id": 810722, "url": "http://patchwork.ozlabs.org/api/1.2/patches/810722/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170906160612.22769-30-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.2/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170906160612.22769-30-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2017-09-06T16:06:09", "name": "[PULL,29/32] target/arm: [a64] Move page and ss checks to init_disas_context", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "288e91602b291d25534d5b473a01b03ae77a5a28", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/1.2/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170906160612.22769-30-richard.henderson@linaro.org/mbox/", "series": [ { "id": 1847, "url": "http://patchwork.ozlabs.org/api/1.2/series/1847/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=1847", "date": "2017-09-06T16:05:41", "name": "[PULL,01/32] tcg: Add generic DISAS_NORETURN", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/1847/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/810722/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/810722/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"fKjXdkKI\"; dkim-atps=neutral" ], "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xnTj52d0Wz9s9Y\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 7 Sep 2017 02:35:37 +1000 (AEST)", "from localhost ([::1]:37088 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dpdIc-0007NL-LO\n\tfor incoming@patchwork.ozlabs.org; Wed, 06 Sep 2017 12:35:34 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:42029)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <richard.henderson@linaro.org>) id 1dpcqy-0000ad-0M\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 12:07:01 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <richard.henderson@linaro.org>) id 1dpcqs-00031D-Bd\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 12:07:00 -0400", "from mail-pf0-x236.google.com ([2607:f8b0:400e:c00::236]:35367)\n\tby eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16)\n\t(Exim 4.71) (envelope-from <richard.henderson@linaro.org>)\n\tid 1dpcqs-000304-5D\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 12:06:54 -0400", "by mail-pf0-x236.google.com with SMTP id g13so13484313pfm.2\n\tfor <qemu-devel@nongnu.org>; Wed, 06 Sep 2017 09:06:54 -0700 (PDT)", "from bigtime.twiddle.net (97-126-108-236.tukw.qwest.net.\n\t[97.126.108.236]) by smtp.gmail.com with ESMTPSA id\n\tt65sm262863pfk.59.2017.09.06.09.06.51\n\t(version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256);\n\tWed, 06 Sep 2017 09:06:52 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=Ha1eJVC/XlLZUGzBl9MJWLKgoWQzuKY2EFfYjP9LFKQ=;\n\tb=fKjXdkKI8Q+4xPflwbSboF8E28IrJYd3ZvRnAm1ggGa2EdVo3A68HaoK1H2mZlDqLr\n\tynC7l2S8DPoC+HfdVd8SBH/6Pi9fh3CIe8GVI/tHuXoWG5YuXUuC4cZBNpz++vErPhcv\n\t7SI11KdcRGzopenikqEQDUojNEJ7NMDXXs7RE=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=Ha1eJVC/XlLZUGzBl9MJWLKgoWQzuKY2EFfYjP9LFKQ=;\n\tb=QUZCw8/JHzNUVQh1yaVu+ef0JDgUP+Rlp6ObFPh1DH1LmyYaKQyu9beOOCn9f695Ws\n\tF8DQAk8HQU0Ql+vRweNY84uPZN8TlYEFGvrtdcR44wKDIn5K+Fj+ffX7uEtSsUohmd5K\n\tvMccruFZekqYtHhmK2vRimGufk/K88N3qd06xwg/PerM/szthUVU3IMhNiOmDUgRtUZ/\n\tPudpgeFQ5Vmprq8d9VkmV4HtYD60uquvjo3hgWQasffKdKD6Kjg4lavakk2A2/WCzi78\n\tFqwjuvsAWCmB2bb4Ocs3OIz72fSYqEgKk/FXYBdX+Y8Kqvxnz/XU8BWFJUzMzP5dNxDH\n\tUsmw==", "X-Gm-Message-State": "AHPjjUg+2q6sZUX/HoITF8RB7puIC4Qi0pOOSrdwL3TUzfz7Ipd8pmI3\n\tTO5IeEx/QeSwc4aHLfYGKA==", "X-Google-Smtp-Source": "ADKCNb4Vp7cOPnQfM83w4ymfDGY7YLTCnrAb/85romrbVW45iyDF+xRZjjwuR54wmEfjzLjDBmjVQw==", "X-Received": "by 10.84.216.6 with SMTP id m6mr8719965pli.143.1504714013015;\n\tWed, 06 Sep 2017 09:06:53 -0700 (PDT)", "From": "Richard Henderson <richard.henderson@linaro.org>", "To": "qemu-devel@nongnu.org", "Date": "Wed, 6 Sep 2017 09:06:09 -0700", "Message-Id": "<20170906160612.22769-30-richard.henderson@linaro.org>", "X-Mailer": "git-send-email 2.13.5", "In-Reply-To": "<20170906160612.22769-1-richard.henderson@linaro.org>", "References": "<20170906160612.22769-1-richard.henderson@linaro.org>", "X-detected-operating-system": "by eggs.gnu.org: Genre and OS details not\n\trecognized.", "X-Received-From": "2607:f8b0:400e:c00::236", "Subject": "[Qemu-devel] [PULL 29/32] target/arm: [a64] Move page and ss checks\n\tto init_disas_context", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "peter.maydell@linaro.org, Richard Henderson <rth@twiddle.net>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "From: Richard Henderson <rth@twiddle.net>\n\nSince AArch64 uses a fixed-width ISA, we can pre-compute the number of\ninsns remaining on the page. Also, we can check for single-step once.\n\nReviewed-by: Emilio G. Cota <cota@braap.org>\nSigned-off-by: Richard Henderson <rth@twiddle.net>\n---\n target/arm/translate-a64.c | 17 +++++++++--------\n 1 file changed, 9 insertions(+), 8 deletions(-)", "diff": "diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c\nindex 25c6622825..9017e30510 100644\n--- a/target/arm/translate-a64.c\n+++ b/target/arm/translate-a64.c\n@@ -11206,6 +11206,7 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase,\n DisasContext *dc = container_of(dcbase, DisasContext, base);\n CPUARMState *env = cpu->env_ptr;\n ARMCPU *arm_cpu = arm_env_get_cpu(env);\n+ int bound;\n \n dc->pc = dc->base.pc_first;\n dc->condjmp = 0;\n@@ -11254,8 +11255,14 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase,\n dc->is_ldex = false;\n dc->ss_same_el = (arm_debug_target_el(env) == dc->current_el);\n \n- dc->next_page_start =\n- (dc->base.pc_first & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;\n+ /* Bound the number of insns to execute to those left on the page. */\n+ bound = -(dc->base.pc_first | TARGET_PAGE_MASK) / 4;\n+\n+ /* If architectural single step active, limit to 1. */\n+ if (dc->ss_active) {\n+ bound = 1;\n+ }\n+ max_insns = MIN(max_insns, bound);\n \n init_tmp_a64_array(dc);\n \n@@ -11323,12 +11330,6 @@ static void aarch64_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu)\n disas_a64_insn(env, dc);\n }\n \n- if (dc->base.is_jmp == DISAS_NEXT) {\n- if (dc->ss_active || dc->pc >= dc->next_page_start) {\n- dc->base.is_jmp = DISAS_TOO_MANY;\n- }\n- }\n-\n dc->base.pc_next = dc->pc;\n translator_loop_temp_check(&dc->base);\n }\n", "prefixes": [ "PULL", "29/32" ] }