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GET /api/1.1/patches/2223228/?format=api
{ "id": 2223228, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2223228/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414182231.18776-6-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": "<20260414182231.18776-6-mohamed@unpredictable.fr>", "date": "2026-04-14T18:22:29", "name": "[5/7] whpx: i386: ignore vpassist when kernel-irqchip=off", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ee8b2e68ab0867d7af7652aa8ac7b496543e3168", "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/20260414182231.18776-6-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 499883, "url": "http://patchwork.ozlabs.org/api/1.1/series/499883/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499883", "date": "2026-04-14T18:22:24", "name": "whpx: i386: Some more changes", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499883/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223228/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223228/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=Qb6rj1lB;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tue, 14 Apr 2026 14:22:49 -0400", "from outbound.pv.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-west-1a-60-percent-9 (Postfix) with ESMTPS id\n 7A36618017A2; Tue, 14 Apr 2026 18:22:44 +0000 (UTC)", "from localhost.localdomain (unknown [17.56.9.36])\n by p00-icloudmta-asmtp-us-west-1a-60-percent-9 (Postfix) with ESMTPSA id\n 8A90018001DB; Tue, 14 Apr 2026 18:22:42 +0000 (UTC)" ], "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1776190966; x=1778782966;\n bh=aHWbpBbWHa1pDSLj1H1tPnDt0duRVaN6KSal90efVe4=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme;\n b=Qb6rj1lBiQ/fdp5uLcQDat9lsIv+cNCd87KS0lhUkjC+XKe1dnpYA5WjxmxhwhQBGCH5lwonCc0GcXx5z5Dhgm1mfBWExY8HeGo+BVSE6Fpf2eHoCuevcXQPChWeCtUDIpM7sHbdHh+mqUVKBaO0VIyOAUZq56zvsu01PGmJcZBmZ4PzFhupx923bkptehA8DngYBS71BV6jBITQZ7otrerF+GFhnruSkOIfaX+1uHYYFkOSbhb4fajCK2bBupxf8QGaSvOfDPxkMJMldI3tnjY+I07jt0LhLAucamWdFphtQarWgBkOXxabNF4QjT8D14xDPn1+PF4OxW0ovlqLsg==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "Pedro Barbuda <pbarbuda@microsoft.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>,\n Zhao Liu <zhao1.liu@intel.com>, Paolo Bonzini <pbonzini@redhat.com>", "Subject": "[PATCH 5/7] whpx: i386: ignore vpassist when kernel-irqchip=off", "Date": "Tue, 14 Apr 2026 20:22:29 +0200", "Message-ID": "<20260414182231.18776-6-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260414182231.18776-1-mohamed@unpredictable.fr>", "References": "<20260414182231.18776-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Authority-Info-Out": "v=2.4 cv=c4GmgB9l c=1 sm=1 tr=0 ts=69de85f5\n cx=c_apl:c_pps:t_out a=azHRBMxVc17uSn+fyuI/eg==:117\n a=azHRBMxVc17uSn+fyuI/eg==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=HmN67jXOOwgiugJlUbgA:9", "X-Proofpoint-GUID": "QPG1F_s5cYYfRUAsDQuBJrokPb-16-MJ", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDE0MDE3MiBTYWx0ZWRfX6kukinN5p/0H\n x3+9bBgOCuEvOQnUVQgu1MZ7OiS5dCwJUH7SjZ1hcjLctr8ihGMWa645Eok+zNDSAIga8uUKM6X\n U4MXogQDE2vm0qdJRtHndeAUGqQQ3ROyDmzJCqEvGm7o/8KvmP+QMuBJyOOvYb2YwNKnGALgSxA\n aoWN/wW+SRiAi22OgO54VBq6nQIznWXmdYCG3/zS894ARqPPi695uSNuxqsXydGRszo/vxI/Rpn\n Nv4pBdhLIXDPPyDOszszaj8unY91AylFxu0sHl/nv39pzcBJ+2tvKIO2McJBhc4MWOsOrsErTX+\n FvO4O6i7ABUPi7xtnALasZwh+0FNE9GDjImu8olFi9MGx97Oauf6l0mPYpC2VQ=", "X-Proofpoint-ORIG-GUID": "QPG1F_s5cYYfRUAsDQuBJrokPb-16-MJ", "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=2026-04-14_03,2026-04-13_04,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=notspam policy=default score=0 adultscore=0\n bulkscore=0 spamscore=0 phishscore=0 suspectscore=0 clxscore=1030\n malwarescore=0 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 classifier=spam\n authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000\n definitions=main-2604140172", "Received-SPF": "pass client-ip=57.103.66.159;\n envelope-from=mohamed@unpredictable.fr; helo=outbound.pv.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": "Linux tries to set vpassist even when none of the enlightenments\nusing it are available.\n\nSo ignore the page it sets.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n---\n target/i386/whpx/whpx-all.c | 13 +++++++++++++\n 1 file changed, 13 insertions(+)", "diff": "diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c\nindex 6c39168b06..2e6679f40b 100644\n--- a/target/i386/whpx/whpx-all.c\n+++ b/target/i386/whpx/whpx-all.c\n@@ -51,6 +51,7 @@\n #define HYPERV_APIC_BUS_FREQUENCY (200000000ULL)\n /* for kernel-irqchip=off */\n #define HV_X64_MSR_APIC_FREQUENCY 0x40000023\n+#define HV_X64_MSR_VP_ASSIST_PAGE 0x40000073\n \n static bool is_modern_os = true;\n \n@@ -2033,6 +2034,18 @@ int whpx_vcpu_run(CPUState *cpu)\n }\n }\n }\n+\n+ /*\n+ * Linux tries to use it anyway even when not exposed. \n+ * Ignore the write as the VP assist page is not used.\n+ */\n+ if (vcpu->exit_ctx.MsrAccess.MsrNumber == HV_X64_MSR_VP_ASSIST_PAGE\n+ && vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite\n+ && !whpx_irqchip_in_kernel()\n+ && whpx->hyperv_enlightenments_enabled) {\n+ is_known_msr = 1;\n+ }\n+\n /*\n * For all unsupported MSR access we:\n * ignore writes\n", "prefixes": [ "5/7" ] }