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GET /api/1.1/patches/2222763/?format=api
{ "id": 2222763, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2222763/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260413152326.63738-11-mohamed@unpredictable.fr/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260413152326.63738-11-mohamed@unpredictable.fr>", "date": "2026-04-13T15:23:22", "name": "[v10,10/14] whpx: i386: IO port fast path cleanup", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "31475a5ad9d98230a9d0aa6d0b833df4a17e1e62", "submitter": { "id": 91318, "url": "http://patchwork.ozlabs.org/api/1.1/people/91318/?format=api", "name": "Mohamed Mediouni", "email": "mohamed@unpredictable.fr" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260413152326.63738-11-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 499721, "url": "http://patchwork.ozlabs.org/api/1.1/series/499721/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499721", "date": "2026-04-13T15:23:12", "name": "whpx: i386: bug fixes, feature probing and CPUID", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/499721/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222763/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222763/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=unpredictable.fr header.i=@unpredictable.fr\n header.a=rsa-sha256 header.s=sig1 header.b=R6+bE7zo;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvWT14YM7z1xtJ\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 14 Apr 2026 01:25:57 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wCJ8u-0005ji-RQ; Mon, 13 Apr 2026 11:24:04 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <mohamed@unpredictable.fr>)\n id 1wCJ8f-0005Xl-H8\n for qemu-devel@nongnu.org; Mon, 13 Apr 2026 11:23:51 -0400", "from qs-2005g-snip4-5.eps.apple.com ([57.103.86.196]\n helo=outbound.qs.icloud.com)\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <mohamed@unpredictable.fr>)\n id 1wCJ8d-0000Uo-Vo\n for qemu-devel@nongnu.org; Mon, 13 Apr 2026 11:23:49 -0400", "from outbound.qs.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-east-2d-100-percent-10 (Postfix) with ESMTPS id\n 4097C1800135; Mon, 13 Apr 2026 15:23:45 +0000 (UTC)", "from localhost.localdomain (unknown [17.57.155.37])\n by p00-icloudmta-asmtp-us-east-2d-100-percent-10 (Postfix) with ESMTPSA id\n 6C58318000A9; Mon, 13 Apr 2026 15:23:43 +0000 (UTC)" ], "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1776093827; x=1778685827;\n bh=G89W4sMC3YwwxzvqsgVypuGjICEkNIb9nBQsRfciAZw=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme;\n b=R6+bE7zoj7oBfFP8RsZg6QlDDBHEMqvM6EoWDWkqWx/a8tpRS4isnHMcRsSL3Ude3uZv2pn7deopafIoXo7iIQThFOhYXWWkONN/+mFnpSNhf7ZZ/l/kzhxzwSsSFusjMOu6JCLe7uUVoJtuN8SrKvTFm5J5zZULCrAukoIYybyJS9NAFVG+dWNS/Xa7R4XwgxUIAvG70xFv6j3c2u4BRMOPO5cjR+mQyoZg9gd0Z/qsbJ60g/ppcai13dEPlvxz2MxCoQuDwLy+3WQYr2yb5mcdr+NHzWc/OAW5O22iW0cqtQz7rJsrnJ4N76DCvkF8ebjG29HXtdRVzcYYGWHXnA==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "Zhao Liu <zhao1.liu@intel.com>, \"Michael S. Tsirkin\" <mst@redhat.com>,\n Paolo Bonzini <pbonzini@redhat.com>, Wei Liu <wei.liu@kernel.org>,\n Roman Bolshakov <rbolshakov@ddn.com>,\n Pedro Barbuda <pbarbuda@microsoft.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>,\n Phil Dennis-Jordan <phil@philjordan.eu>", "Subject": "[PATCH v10 10/14] whpx: i386: IO port fast path cleanup", "Date": "Mon, 13 Apr 2026 17:23:22 +0200", "Message-ID": "<20260413152326.63738-11-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260413152326.63738-1-mohamed@unpredictable.fr>", "References": "<20260413152326.63738-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDEzMDE1MSBTYWx0ZWRfXx6LjKkf+MynM\n dDLk/MJBRWwfZQ8Z5Sf1vixAZ07Qp2MTPwS2zF2cQfxwaqExK/YUw5Q6nOJluHJkwIWLEFtTR0x\n 2KUwu2VhNxNAMn4+yt3LTyP2oupnMSI+qh7g51xZ/JkzRZaUbe9HdrcVHtQZAp/HW0wa2Zm392B\n BQy0T45LsbHq2KUIe1Na5VSX/xlu7E+ZARfMCu9qVBCsSJV7XMg0GekscvBxGSOCu3wUc2MItq/\n EuqVecthFNKOZhBcjPywS/3UL4A53ZpcLaKxQ4Pwqsq7EUh8lPdBHUt8VVtiEAhElF4VHhOZJ1S\n 7kVG3FdSENKUpxQ9Ug9PJOrDmd9frXMb4UFIqKr1Y28C53IF1V7jq66FQRIZ1Y=", "X-Proofpoint-GUID": "LDp9tnS6bRPzTsZA8uhi45_bHLsXLKmh", "X-Authority-Info-Out": "v=2.4 cv=LNRrgZW9 c=1 sm=1 tr=0 ts=69dd0a82\n cx=c_apl:c_pps:t_out a=bsP7O+dXZ5uKcj+dsLqiMw==:117\n a=bsP7O+dXZ5uKcj+dsLqiMw==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=Vrzv6M8N8vcM0KmfSJEA:9", "X-Proofpoint-ORIG-GUID": "LDp9tnS6bRPzTsZA8uhi45_bHLsXLKmh", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-13_03,2026-04-13_04,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=notspam policy=default score=0 clxscore=1030\n lowpriorityscore=0 spamscore=0 mlxlogscore=805 bulkscore=0 adultscore=0\n suspectscore=0 malwarescore=0 phishscore=0 mlxscore=0 classifier=spam\n authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000\n definitions=main-2604130151", "Received-SPF": "pass client-ip=57.103.86.196;\n envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-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": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://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 <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "vmport calls synchronise_state within an I/O port read.\nSupport that properly.\n\nWhat was there before worked because of a side effect of\nwhpx_get_reg synchronising context if cpu->vcpu_dirty.\n\nRemove that whpx_get_reg call in whpx_bump_rip too as it's no longer\nneeded now.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n---\n target/i386/whpx/whpx-all.c | 17 +++++++++++++----\n 1 file changed, 13 insertions(+), 4 deletions(-)", "diff": "diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c\nindex 7c80d653d1..61aec98e66 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -862,7 +862,6 @@ static void handle_io(CPUState *env, uint16_t port, void *buffer,\n static void whpx_bump_rip(CPUState *cpu, WHV_RUN_VP_EXIT_CONTEXT *exit_ctx)\n {\n WHV_REGISTER_VALUE reg;\n- whpx_get_reg(cpu, WHvX64RegisterRip, ®);\n reg.Reg64 = exit_ctx->VpContext.Rip + exit_ctx->VpContext.InstructionLength;\n whpx_set_reg(cpu, WHvX64RegisterRip, reg);\n }\n@@ -890,13 +889,23 @@ static int whpx_handle_portio(CPUState *cpu,\n } else {\n reg.Reg64 = (uint64_t)val;\n }\n- whpx_bump_rip(cpu, exit_ctx);\n- whpx_set_reg(cpu, WHvX64RegisterRax, reg);\n+ /* vmport calls cpu_synchronize_state on an I/O port read */\n+ if (!cpu->vcpu_dirty) {\n+ whpx_bump_rip(cpu, exit_ctx);\n+ whpx_set_reg(cpu, WHvX64RegisterRax, reg);\n+ } else {\n+ env->eip = exit_ctx->VpContext.Rip + exit_ctx->VpContext.InstructionLength;\n+ env->regs[R_EAX] = reg.Reg64;\n+ }\n return 0;\n } else if (!ctx->AccessInfo.StringOp && ctx->AccessInfo.IsWrite) {\n RAX(env) = ctx->Rax;\n handle_io(cpu, ctx->PortNumber, &RAX(env), 1, ctx->AccessInfo.AccessSize, 1);\n- whpx_bump_rip(cpu, exit_ctx);\n+ if (!cpu->vcpu_dirty) {\n+ whpx_bump_rip(cpu, exit_ctx);\n+ } else {\n+ env->eip = exit_ctx->VpContext.Rip + exit_ctx->VpContext.InstructionLength;\n+ }\n return 0;\n }\n \n", "prefixes": [ "v10", "10/14" ] }