From nobody Sat Apr 11 20:00:24 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=unpredictable.fr ARC-Seal: i=1; a=rsa-sha256; t=1775589955; cv=none; d=zohomail.com; s=zohoarc; b=OX3KI+/F8va7EyRoRUQ6jaScWV9mn3VJvnWIG3Ig4maGR6lncDvwpna8fDZG9ribc68pR7UWp7UodUew9VPmgzNAbKLEL31ahh0pvSQ3hDC2WQiraNDqPhTeOOKxenkdnUgHlv5tEOfVD//YgxOhF73IGLxm4vatCr4Q0AFUIi0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1775589955; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=UDUDDhSNImOkwjgegNmDYFGV0Ws4YLT0V61YNwqVXjA=; b=YL9PUTbO1jGVuR0MsM2DNZpQO4hvjOLtN9sTRF0Au3otVARrDKyj1A4YOSAJQESouCDUSOkOksaWZ+1P75A64zP821oFrD3XsBE38T5eRe5tercWYKnRH2SepZkvl13VWfOa5XvZTEMKQ36pNvJBUoRbbBpgmgk5nNADLqrnNWQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 177558995559479.95906408519602; Tue, 7 Apr 2026 12:25:55 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wABUg-0006Xd-MA; Tue, 07 Apr 2026 14:49:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wABT6-0002em-AA for qemu-devel@nongnu.org; Tue, 07 Apr 2026 14:48:15 -0400 Received: from qs-2004a-snip4-11.eps.apple.com ([57.103.84.13] helo=outbound.qs.icloud.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wA7GA-0005AD-4q for qemu-devel@nongnu.org; Tue, 07 Apr 2026 10:18:31 -0400 Received: from outbound.qs.icloud.com (unknown [127.0.0.2]) by p00-icloudmta-asmtp-us-east-2d-100-percent-9 (Postfix) with ESMTPS id 4E1C618000B0; Tue, 07 Apr 2026 14:18:26 +0000 (UTC) Received: from localhost.localdomain (unknown [17.57.155.37]) by p00-icloudmta-asmtp-us-east-2d-100-percent-9 (Postfix) with ESMTPSA id 4E00F180019C; Tue, 07 Apr 2026 14:18:24 +0000 (UTC) Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr; s=sig1; t=1775571509; x=1778163509; bh=UDUDDhSNImOkwjgegNmDYFGV0Ws4YLT0V61YNwqVXjA=; h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme; b=Tq3N7FdpnmNLXJX0jpZBT0s+t2EvwT7yRhsKh/fJXUS2yeWOGmlC9fEF0E4eS2qHNC+Oo/eiDEOHoMP2FdXp6VmQ5a3qql7M8/AwYjyTfx2l1Bo/VEhNmiK8k8GI5+Tx2C73pfy6su9a14rwTSsugdMy+HmcK9wYHZdzQvzY1EH8Uo6pzWaSpvgv18+5nYZp5M/a82psLFl0KiPhb5Tv3hPGvH84TR8HAmNMUevJo50OM/QlWo4XJ6r++/wWJ3VZyQkBLJs0WQQoi6WpCw5WPVX8n3Vs1xxdWmCB/L2F2s8Rm+8g6UlIxlKoTMOHaS+dqSrFQirhsEMTzPVGGFI/wA== mail-alias-created-date: 1752046281608 From: Mohamed Mediouni To: qemu-devel@nongnu.org Cc: Mohamed Mediouni , Roman Bolshakov , Phil Dennis-Jordan , Zhao Liu , Paolo Bonzini , Wei Liu , Pedro Barbuda Subject: [PATCH v8 10/13] whpx: i386: disable kernel-irqchip on Windows 10 when PIC enabled Date: Tue, 7 Apr 2026 16:18:06 +0200 Message-ID: <20260407141809.16862-11-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260407141809.16862-1-mohamed@unpredictable.fr> References: <20260407141809.16862-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA3MDEzMSBTYWx0ZWRfXyhGj6WSMsPAL dLLvodwltheO0s3yNL0HciUKn9pUpodkdmsEsdyfF9pRqsTN5sVgVtLy8emQYpkgOm6n5jMQXCQ lR4Gp6KZ8CWqoRrOQYakVRnXm324W70LjTxw6QnSrsRmmXtjiy9MqFZtWKxLE1c/GuRq4hB4eO0 TdRciY8AHQX+u2hPD7o+MYI2NyAOdXr4cIh+aIIpnUJrwgvqrnIJjL0MrfQjFnRBPtw6Yfi+AIL XfQdApz4zTpQZVjdmwyr5s3HA59jcS3U05zlFjHHqPd8nzXEZZCNpH86v7vbmFp1OqkSliNplKK gPKAqmufv0E1rlHC+eGyEH23U292slmc+3RB4yHyovDCL5z93TxvpbsxlfM9Qc= X-Authority-Info-Out: v=2.4 cv=BIS+bVQG c=1 sm=1 tr=0 ts=69d51233 cx=c_apl:c_pps:t_out a=bsP7O+dXZ5uKcj+dsLqiMw==:117 a=bsP7O+dXZ5uKcj+dsLqiMw==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=nUl_a9z44qMLw6SsMv4A:9 X-Proofpoint-ORIG-GUID: oZrhKIqlmiIj_AO72301vg7aSd98f-2C X-Proofpoint-GUID: oZrhKIqlmiIj_AO72301vg7aSd98f-2C X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-07_03,2026-04-07_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 mlxscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 malwarescore=0 phishscore=0 mlxlogscore=778 clxscore=1030 classifier=spam authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2604070131 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.84.13; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1775589958567154100 Content-Type: text/plain; charset="utf-8" Move WHvCapabilityCodeProcessorPerfmonFeatures queries as that's how we distinguish if on a legacy OS. Now that Windows guests are booting, disable kernel-irqchip=3Don by default for Windows 10 when the PIC is enabled. Signed-off-by: Mohamed Mediouni --- target/i386/whpx/whpx-all.c | 69 +++++++++++++++++++++---------------- 1 file changed, 39 insertions(+), 30 deletions(-) diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c index 74b94b799e..7c80d653d1 100644 --- a/target/i386/whpx/whpx-all.c +++ b/target/i386/whpx/whpx-all.c @@ -2447,6 +2447,13 @@ int whpx_accel_init(AccelState *as, MachineState *ms) 0x8000000A, 0x80000021, 0x80000022, 0xC0000000, 0xC0000001}; UINT32 cpuidExitList_legacy_os[] =3D {1, 0x40000000, 0x40000001, 0x400= 00010}; =20 + X86MachineState *x86ms =3D X86_MACHINE(ms); + bool pic_enabled =3D false; + + if (x86ms->pic =3D=3D ON_OFF_AUTO_ON || x86ms->pic =3D=3D ON_OFF_AUTO_= AUTO) { + pic_enabled =3D true; + } + whpx =3D &whpx_global; =20 if (!init_whp_dispatch()) { @@ -2518,6 +2525,35 @@ int whpx_accel_init(AccelState *as, MachineState *ms) goto error; } =20 + /* Enable supported performance monitoring capabilities */ + hr =3D whp_dispatch.WHvGetCapability( + WHvCapabilityCodeProcessorPerfmonFeatures, &perfmon_features, + sizeof(WHV_PROCESSOR_PERFMON_FEATURES), &whpx_cap_size); + /* + * Relying on this is a crutch to maintain Windows 10 support. + * + * WHvCapabilityCodeProcessorPerfmonFeatures and + * WHvPartitionPropertyCodeSyntheticProcessorFeaturesBanks + * are implemented starting from Windows Server 2022 (build 20348). + */ + if (FAILED(hr)) { + warn_report("WHPX: Failed to get performance " + "monitoring features, hr=3D%08lx", hr); + is_modern_os =3D false; + } else { + hr =3D whp_dispatch.WHvSetPartitionProperty( + whpx->partition, + WHvPartitionPropertyCodeProcessorPerfmonFeatures, + &perfmon_features, + sizeof(WHV_PROCESSOR_PERFMON_FEATURES)); + if (FAILED(hr)) { + error_report("WHPX: Failed to set performance " + "monitoring features, hr=3D%08lx", hr); + ret =3D -EINVAL; + goto error; + } + } + /* * Error out if WHP doesn't support apic emulation and user is requiri= ng * it. @@ -2530,8 +2566,9 @@ int whpx_accel_init(AccelState *as, MachineState *ms) goto error; } =20 - if (whpx->kernel_irqchip_allowed && features.LocalApicEmulation && - whp_dispatch.WHvSetVirtualProcessorInterruptControllerState2) { + if (whpx->kernel_irqchip_allowed && !(whpx_is_legacy_os() && pic_enabl= ed + && !whpx->kernel_irqchip_required) && features.LocalApicEmulation + && whp_dispatch.WHvSetVirtualProcessorInterruptControllerState2) { WHV_X64_LOCAL_APIC_EMULATION_MODE mode =3D WHvX64LocalApicEmulationModeX2Apic; hr =3D whp_dispatch.WHvSetPartitionProperty( @@ -2590,34 +2627,6 @@ int whpx_accel_init(AccelState *as, MachineState *ms) goto error; } =20 - /* Enable supported performance monitoring capabilities */ - hr =3D whp_dispatch.WHvGetCapability( - WHvCapabilityCodeProcessorPerfmonFeatures, &perfmon_features, - sizeof(WHV_PROCESSOR_PERFMON_FEATURES), &whpx_cap_size); - /* - * Relying on this is a crutch to maintain Windows 10 support. - * - * WHvCapabilityCodeProcessorPerfmonFeatures and - * WHvPartitionPropertyCodeSyntheticProcessorFeaturesBanks - * are implemented starting from Windows Server 2022 (build 20348). - */ - if (FAILED(hr)) { - warn_report("WHPX: Failed to get performance " - "monitoring features, hr=3D%08lx", hr); - is_modern_os =3D false; - } else { - hr =3D whp_dispatch.WHvSetPartitionProperty( - whpx->partition, - WHvPartitionPropertyCodeProcessorPerfmonFeatures, - &perfmon_features, - sizeof(WHV_PROCESSOR_PERFMON_FEATURES)); - if (FAILED(hr)) { - error_report("WHPX: Failed to set performance " - "monitoring features, hr=3D%08lx", hr); - ret =3D -EINVAL; - goto error; - } - } =20 /* Enable synthetic processor features */ WHV_SYNTHETIC_PROCESSOR_FEATURES_BANKS synthetic_features; --=20 2.50.1 (Apple Git-155)