Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/1.1/patches/2219742/?format=api
{ "id": 2219742, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2219742/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260404042015.86580-5-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": "<20260404042015.86580-5-mohamed@unpredictable.fr>", "date": "2026-04-04T04:20:08", "name": "[v6,04/11] whpx: i386: disable TbFlushHypercalls for emulated LAPIC", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c8bc98883e288377ddb601331c7229a335473143", "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/20260404042015.86580-5-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 498696, "url": "http://patchwork.ozlabs.org/api/1.1/series/498696/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498696", "date": "2026-04-04T04:20:05", "name": "whpx: i386: bug fixes, feature probing and CPUID", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/498696/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219742/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219742/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=IKKYy645;\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=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.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 4fnj9H2Zgkz1yD3\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 04 Apr 2026 15:22:11 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1w8sUs-0006hG-Oz; Sat, 04 Apr 2026 00:20:34 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.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 1w8sUp-0006er-RY\n for qemu-devel@nongnu.org; Sat, 04 Apr 2026 00:20:32 -0400", "from p-east2-cluster5-host11-snip4-1.eps.apple.com ([57.103.79.64]\n helo=outbound.st.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 1w8sUm-00064O-PL\n for qemu-devel@nongnu.org; Sat, 04 Apr 2026 00:20:31 -0400", "from outbound.st.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-east-1a-10-percent-0 (Postfix) with ESMTPS id\n 2B969180015F; Sat, 04 Apr 2026 04:20:25 +0000 (UTC)", "from localhost.localdomain (unknown [17.42.251.67])\n by p00-icloudmta-asmtp-us-east-1a-10-percent-0 (Postfix) with ESMTPSA id\n 670351800175; Sat, 04 Apr 2026 04:20:23 +0000 (UTC)" ], "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1775276426; x=1777868426;\n bh=LeCfULzXVq8eMeXoD4HoazACVFGuCL5m06fQgObX99k=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme;\n b=IKKYy645q8Zk5KO28AblWY4SSx2B3NFJ8uP+bxRfvc5/k2zrYZpKV2zHBb3KXtSVTSzy2ULnz1UUaaH3iGmgo8+yuRWlE7jn1YnO5I1JTjhSV3XRFxjTdN7Ek4Agw0c9pWwbfbGpgycMcNPLVKOu+MCW0UWDQK6w2315UEP53LtcPX43YsKNTrGoyGwFIk/EFfgNaVkdlHPgBAF/fu59xeqYy50wgRsMuSJgu0fRwfb7IEiBc522FuxFIBkrHnnoVU8OnAX7aIukbal6lczOFmkhdUE32/PW3ua3zyWQHSqTe5mcfTxcUlxIaB/IHjHik3BobOqCAs+B1XZC4AvcHw==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "Wei Liu <wei.liu@kernel.org>, Roman Bolshakov <rbolshakov@ddn.com>,\n Pedro Barbuda <pbarbuda@microsoft.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>,\n Phil Dennis-Jordan <phil@philjordan.eu>,\n Paolo Bonzini <pbonzini@redhat.com>, Zhao Liu <zhao1.liu@intel.com>", "Subject": "[PATCH v6 04/11] whpx: i386: disable TbFlushHypercalls for emulated\n LAPIC", "Date": "Sat, 4 Apr 2026 06:20:08 +0200", "Message-ID": "<20260404042015.86580-5-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260404042015.86580-1-mohamed@unpredictable.fr>", "References": "<20260404042015.86580-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Proofpoint-ORIG-GUID": "NWaw5v4TaIOGCHjE7yyR0VUQfiIO6bSh", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDA0MDAzNCBTYWx0ZWRfXw5WebQ7oK/B0\n mURcO3fjiT5U2GjKgtd/XqHpjt8De+ZNLixVgcW/0p2VvC+3SLZue13vELu9ZYfWGHwrO+cqjlT\n hxe9we73UUWnCGw1nJsmQmmSNkk1CQJN1kUNyFtqT0ykjrvib+Qx1wLSJH1BAw+Zxo0FmxZYoBe\n 05hYMlMecsUrh7xTzPdPNF+ma9gklGgrrjIjRpc3YrIl9uoPdHzHSWuYuv3iSzLp7yFY45c8EFm\n hwhbbfxfHMRWrCZtVYaNVJ8QlQxGgsS8XQDcXpmQbJV26Oy5gPg8GVtZF0fqZLQn70KZXk5czmk\n W1Xd+5ZVmu1wQPQE+VVUSCTgpFJKUBvb1+RNjwLOd6iMa/7UM/H319kjKmiki0=", "X-Proofpoint-GUID": "NWaw5v4TaIOGCHjE7yyR0VUQfiIO6bSh", "X-Authority-Info-Out": "v=2.4 cv=cc7fb3DM c=1 sm=1 tr=0 ts=69d09189\n cx=c_apl:c_pps:t_out a=YrL12D//S6tul8v/L+6tKg==:117\n a=YrL12D//S6tul8v/L+6tKg==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=Rm0zj2O9plGGl-KjdfMA:9", "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=2026-04-03_07,2026-04-03_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=notspam policy=default score=0 mlxlogscore=709\n phishscore=0 suspectscore=0 spamscore=0\n lowpriorityscore=0 mlxscore=0\n malwarescore=0 clxscore=1030 bulkscore=0 adultscore=0 classifier=spam\n authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000\n definitions=main-2604040034", "Received-SPF": "pass client-ip=57.103.79.64;\n envelope-from=mohamed@unpredictable.fr; helo=outbound.st.icloud.com", "X-Spam_score_int": "-27", "X-Spam_score": "-2.8", "X-Spam_bar": "--", "X-Spam_report": "(-2.8 / 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_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001,\n 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": "AccessHypercallRegs was present twice so clean that up.\n\nRemove TbFlushHypercalls (and its extended Gva range sub-feature)\nfrom the user-mode LAPIC case as it behaves oddly there.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n---\n target/i386/whpx/whpx-all.c | 9 ++++++---\n 1 file changed, 6 insertions(+), 3 deletions(-)", "diff": "diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c\nindex 2d527b90dd..0908dfd134 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -2489,10 +2489,7 @@ int whpx_accel_init(AccelState *as, MachineState *ms)\n synthetic_features.Bank0.AccessPartitionReferenceTsc = 1;\n synthetic_features.Bank0.AccessHypercallRegs = 1;\n synthetic_features.Bank0.AccessFrequencyRegs = 1;\n- synthetic_features.Bank0.EnableExtendedGvaRangesForFlushVirtualAddressList = 1;\n synthetic_features.Bank0.AccessVpIndex = 1;\n- synthetic_features.Bank0.AccessHypercallRegs = 1;\n- synthetic_features.Bank0.TbFlushHypercalls = 1;\n \n if (whpx_irqchip_in_kernel()) {\n synthetic_features.Bank0.AccessSynicRegs = 1;\n@@ -2500,6 +2497,12 @@ int whpx_accel_init(AccelState *as, MachineState *ms)\n synthetic_features.Bank0.AccessIntrCtrlRegs = 1;\n synthetic_features.Bank0.SyntheticClusterIpi = 1;\n synthetic_features.Bank0.DirectSyntheticTimers = 1;\n+ /*\n+ * These technically work without the Hyper-V LAPIC\n+ * but behave oddly for multi-core VMs.\n+ */\n+ synthetic_features.Bank0.TbFlushHypercalls = 1;\n+ synthetic_features.Bank0.EnableExtendedGvaRangesForFlushVirtualAddressList = 1;\n }\n \n if (is_modern_os && whpx->hyperv_enlightenments_allowed) {\n", "prefixes": [ "v6", "04/11" ] }