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GET /api/patches/2226934/?format=api
{ "id": 2226934, "url": "http://patchwork.ozlabs.org/api/patches/2226934/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260422214225.2242-5-mohamed@unpredictable.fr/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/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": "<20260422214225.2242-5-mohamed@unpredictable.fr>", "list_archive_url": null, "date": "2026-04-22T21:41:52", "name": "[v3,04/37] 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/people/91318/?format=api", "name": "Mohamed Mediouni", "email": "mohamed@unpredictable.fr" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260422214225.2242-5-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 501116, "url": "http://patchwork.ozlabs.org/api/series/501116/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501116", "date": "2026-04-22T21:41:48", "name": "[v3,01/37] target/i386: emulate: include name of unhandled instruction", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/501116/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226934/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226934/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@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=ejLVaPZT;\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 4g1CTY5rXBz1yD5\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 23 Apr 2026 07:46:09 +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 1wFfLK-0007ta-RU; Wed, 22 Apr 2026 17:42:46 -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 1wFfLI-0007sb-2i\n for qemu-devel@nongnu.org; Wed, 22 Apr 2026 17:42:44 -0400", "from p-east2-cluster1-host4-snip4-10.eps.apple.com ([57.103.76.23]\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 1wFfLF-0006ww-Mf\n for qemu-devel@nongnu.org; Wed, 22 Apr 2026 17:42:43 -0400", "from outbound.st.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-east-1a-100-percent-1 (Postfix) with ESMTPS id\n DBBBE1800227; Wed, 22 Apr 2026 21:42:37 +0000 (UTC)", "from localhost.localdomain (unknown [17.42.251.67])\n by p00-icloudmta-asmtp-us-east-1a-100-percent-1 (Postfix) with ESMTPSA id\n AFE181800232; Wed, 22 Apr 2026 21:42:35 +0000 (UTC)" ], "X-ICL-Out-Info": "\n HUtFAUMHWwJACUgBTUQeDx5WFlZNRAJCTQFIHV8DWRxBAUkdXw9LVxQEFVwFVgZXFHkNXR1FDlYZWgxSD1sOHBZLWFUJCgZdGFgVVgl3HlwASx1XBFQfUxJVHR0LRUtAEwRJAU1fDl4fBBdGGVUERx5dVkAZGQJRHFYNV0NUBF9QSQxBUGxaAEcXSB1dGVlvUF0cDhhZG0AVXRFQGVYJXhUXHkFNWgJWTQVKA18BWwZCC0oCWQVZB14LSgdfGl4fHVYQUgBSD3IFVwhBCFMCUQRYGl8IGQ1AThkMSh1SVlEFSgxcAGgPXR1YEV0=", "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1776894160; x=1779486160;\n bh=V8p4axRuSSeu+sKKMx+ar98eGUS5hUC2c3mtFQ7SVOk=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme;\n b=ejLVaPZThiBJvBhld6DZp6xLNk4D97MXP7fxOGrKu6ZskEx8KhlttWIG4feiDn0+OuM5UH4MjLCGeqJIYMJqRwWwskL58rPg5kWQMKXhXFxeO7acoqBU7ZP/h1uguGV3QRT+BH5obFpVmxFr/ClWSBMzLB6DDIsC27WBZDn7k1gb1qVl3bef+hYEomU0navy2zmXImIlA1ULv993tQ4hsGNp5CRuLTieIE3TC2VsEizFa1tBpCk6nUixBVNlYnExSomdShcbwVPhhTg7+OcELOWlNtbWKTAFIlc86Z0i0lW8qWXFYsBJ9EJqhmWnj1+Ftb5lAj/qc2v9lFzghWX4Ow==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "Pedro Barbuda <pbarbuda@microsoft.com>, qemu-arm@nongnu.org,\n Pierrick Bouvier <pierrick.bouvier@linaro.org>,\n Mohamed Mediouni <mohamed@unpredictable.fr>,\n Roman Bolshakov <rbolshakov@ddn.com>,\n \"Michael S. Tsirkin\" <mst@redhat.com>, Wei Liu <wei.liu@kernel.org>,\n Phil Dennis-Jordan <phil@philjordan.eu>,\n Peter Maydell <peter.maydell@linaro.org>, Zhao Liu <zhao1.liu@intel.com>,\n Paolo Bonzini <pbonzini@redhat.com>", "Subject": "[PATCH v3 04/37] whpx: i386: disable TbFlushHypercalls for emulated\n LAPIC", "Date": "Wed, 22 Apr 2026 23:41:52 +0200", "Message-ID": "<20260422214225.2242-5-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260422214225.2242-1-mohamed@unpredictable.fr>", "References": "<20260422214225.2242-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDIyMDIxMSBTYWx0ZWRfX6moWjjXhKEB9\n FnMhwoCJ8VOnV9+MBifVxtdGrMHm58RIonCeQGFnqzjCJOFgUbylAJUnENCeo5/jbd+Xh655G+S\n 0LJQtHbZBwNPd2NMB6J+usbxEXCYntzYHPrftnVmnzPxgRArqYLZ1mlAnNL+LyBexPKpYpJNKrV\n iuGDjHMlO8f3J0uUoO7CzgCAhNycQYdwYism4ggjnOWAzw4lFoJ1xkXnPdLsG8w03fhWyU8SaDd\n ++LRabrnqpsZsBqLxoxUuYu/5ZNQ+ZX+jDpILCzJpaBPgl5PfqOmtDZC7Sq5xebWOMlI7bfoI+f\n eqiQ8T1rqzvMhhbtPU6Ke6IQzSj96STjSWg8LixhbNmTzpmvXzSjZHGCb4mSzM=", "X-Authority-Info-Out": "v=2.4 cv=cIbtc1eN c=1 sm=1 tr=0 ts=69e940ce\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-ORIG-GUID": "RhKjumfgKrSSxGXU2T-lGyPICLuSLEW4", "X-Proofpoint-GUID": "RhKjumfgKrSSxGXU2T-lGyPICLuSLEW4", "Received-SPF": "pass client-ip=57.103.76.23;\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_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=unavailable 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 d211b3f2ef..8f03616cb9 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -2577,10 +2577,7 @@ 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@@ -2588,6 +2585,12 @@ 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": [ "v3", "04/37" ] }