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GET /api/patches/2196593/?format=api
{ "id": 2196593, "url": "http://patchwork.ozlabs.org/api/patches/2196593/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260215112543.4817-5-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": "<20260215112543.4817-5-mohamed@unpredictable.fr>", "list_archive_url": null, "date": "2026-02-15T11:25:33", "name": "[v10,04/14] accel, hw/arm, include/system/hvf: infrastructure changes for HVF vGIC", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a8671cc380bb0c0cb34e47adaeea08f21c060177", "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/20260215112543.4817-5-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 492211, "url": "http://patchwork.ozlabs.org/api/series/492211/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492211", "date": "2026-02-15T11:25:32", "name": "HVF: Add support for platform vGIC and nested virtualisation", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/492211/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196593/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196593/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=gkm5A0dq;\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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Sun, 15 Feb 2026 06:26:04 -0500", "from outbound.mr.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-west-2a-100-percent-0 (Postfix) with ESMTPS id\n A439218002A9; Sun, 15 Feb 2026 11:25:57 +0000 (UTC)", "from localhost.localdomain (unknown [17.57.152.38])\n by p00-icloudmta-asmtp-us-west-2a-100-percent-0 (Postfix) with ESMTPSA id\n 2D0741800294; Sun, 15 Feb 2026 11:25:55 +0000 (UTC)" ], "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1771154759; x=1773746759;\n bh=59TJPyifQdYiPo+R2EjYdFKf7iChqKxw+V2UadvNjas=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:x-icloud-hme;\n b=gkm5A0dqkQEXMfBKt9BCbbzN88Wr/e5R0+HnjhpCsHEImxRQn21OvHW0mwTv5QUH7L1VtX6bQKn9Mby+p9uPouqjSmpONXjFsZ1jv43tK5xYenhUd13XJNdx5hQaQK5iUrFeZaSVRm/adkf2xRm8AtDAJxvEtTgl4XNivIQXbR9huocJ6i4PO3vJ8af96yZ2xmzw76IxD4bpZVWfEE4+ODvNuh9ArGmbcw/lDbzeL2VfAijOsuKUG/Oj5NZM4/LvjUrPBXtcY7M22bsXDZqrAlQsp5QK2FOVWP/rDmG2gaZHn0GGvJefXiIc14DAUGxjeS/YQp6j7dZjdoKk+AybiQ==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "qemu-arm@nongnu.org, Peter Maydell <peter.maydell@linaro.org>,\n Mads Ynddal <mads@ynddal.dk>, Roman Bolshakov <rbolshakov@ddn.com>,\n Phil Dennis-Jordan <phil@philjordan.eu>, Alexander Graf <agraf@csgraf.de>,\n Paolo Bonzini <pbonzini@redhat.com>, Cameron Esfahani <dirty@apple.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>", "Subject": "[PATCH v10 04/14] accel, hw/arm,\n include/system/hvf: infrastructure changes for HVF vGIC", "Date": "Sun, 15 Feb 2026 12:25:33 +0100", "Message-ID": "<20260215112543.4817-5-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260215112543.4817-1-mohamed@unpredictable.fr>", "References": "<20260215112543.4817-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMjE1MDA5MiBTYWx0ZWRfXyBEWuiq55QM2\n lMcuMFf8eegJPJuM5sVgs6GDG3KTQrZNrBbQdj5wYCKm9Ealtj5LBgoGOIz5MgAL9JTbwo4ESyp\n OO7L8NljuwAfqh5zDRvLIt8BQO62rgB9IqbLJBavUDfSkT2HKEiXrBEVBKdpD3tSa8G7rdBNJs+\n q1gaAQZUQ6S30C7ic/XhLdI2UA/2pulTGWN3wSbmoW40KCX+N5W/qUVe/1JZLmNtkquBZO3pRrv\n q2hbBlzc+v9JkiFcJf7bD+toHspSwl9WyqNg9WTVTEtsQySAljKmirDaKc/LB+bThCEBwO+N2EM\n NfzqvJVw0KIikEdjuz0x8xgTFAnLN4PQE3RS8FAf1k+RU2RGWokP9Xe/B1r28Y=", "X-Authority-Info-Out": "v=2.4 cv=FMQWBuos c=1 sm=1 tr=0 ts=6991ad46\n cx=c_apl:c_apl_out:c_pps a=9OgfyREA4BUYbbCgc0Y0oA==:117\n a=9OgfyREA4BUYbbCgc0Y0oA==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22\n a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=n4FVybPFTm1vobq06wUA:9", "X-Proofpoint-GUID": "0S9OHb8sbkc-nVZUEIxVrkAB8pr3_gxi", "X-Proofpoint-ORIG-GUID": "0S9OHb8sbkc-nVZUEIxVrkAB8pr3_gxi", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-02-15_04,2026-02-13_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=notspam policy=default score=0\n lowpriorityscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0\n mlxscore=0 spamscore=0 phishscore=0 adultscore=0 clxscore=1030\n classifier=spam authscore=0 adjust=0 reason=mlx scancount=1\n engine=8.22.0-2601150000 definitions=main-2602150092", "X-JNJ": "\n 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", "Received-SPF": "pass client-ip=57.103.68.63;\n envelope-from=mohamed@unpredictable.fr; helo=outbound.mr.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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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": "Misc changes needed for HVF vGIC enablement.\n\nNote: x86_64 macOS exposes interrupt controller virtualisation since macOS 12.\nKeeping an #ifdef here in case we end up supporting that...\n\nHowever, given that x86_64 macOS is on its way out, it'll probably (?) not be supported in Qemu.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n---\n accel/hvf/hvf-all.c | 50 ++++++++++++++++++++++++++++++++++++++\n accel/stubs/hvf-stub.c | 1 +\n hw/arm/virt.c | 23 +++++++++++++++---\n hw/intc/arm_gicv3_common.c | 3 +++\n include/system/hvf.h | 3 +++\n system/vl.c | 2 ++\n 6 files changed, 78 insertions(+), 4 deletions(-)", "diff": "diff --git a/accel/hvf/hvf-all.c b/accel/hvf/hvf-all.c\nindex 033c677b6f..929f53fd37 100644\n--- a/accel/hvf/hvf-all.c\n+++ b/accel/hvf/hvf-all.c\n@@ -10,6 +10,8 @@\n \n #include \"qemu/osdep.h\"\n #include \"qemu/error-report.h\"\n+#include \"qapi/error.h\"\n+#include \"qapi/qapi-visit-common.h\"\n #include \"accel/accel-ops.h\"\n #include \"exec/cpu-common.h\"\n #include \"system/address-spaces.h\"\n@@ -22,6 +24,7 @@\n #include \"trace.h\"\n \n bool hvf_allowed;\n+bool hvf_kernel_irqchip;\n \n const char *hvf_return_string(hv_return_t ret)\n {\n@@ -217,6 +220,43 @@ static int hvf_gdbstub_sstep_flags(AccelState *as)\n return SSTEP_ENABLE | SSTEP_NOIRQ;\n }\n \n+static void hvf_set_kernel_irqchip(Object *obj, Visitor *v,\n+ const char *name, void *opaque,\n+ Error **errp)\n+{\n+ OnOffSplit mode;\n+ if (!visit_type_OnOffSplit(v, name, &mode, errp)) {\n+ return;\n+ }\n+\n+ switch (mode) {\n+ case ON_OFF_SPLIT_ON:\n+#ifdef HOST_X86_64\n+ /* macOS 12 onwards exposes an HVF virtual APIC. */\n+ error_setg(errp, \"HVF: kernel irqchip is not currently implemented for x86.\");\n+ break;\n+#else\n+ hvf_kernel_irqchip = true;\n+ break;\n+#endif\n+\n+ case ON_OFF_SPLIT_OFF:\n+ hvf_kernel_irqchip = false;\n+ break;\n+\n+ case ON_OFF_SPLIT_SPLIT:\n+ error_setg(errp, \"HVF: split irqchip is not supported on HVF.\");\n+ break;\n+\n+ default:\n+ /*\n+ * The value was checked in visit_type_OnOffSplit() above. If\n+ * we get here, then something is wrong in QEMU.\n+ */\n+ abort();\n+ }\n+}\n+\n static void hvf_accel_class_init(ObjectClass *oc, const void *data)\n {\n AccelClass *ac = ACCEL_CLASS(oc);\n@@ -224,6 +264,16 @@ static void hvf_accel_class_init(ObjectClass *oc, const void *data)\n ac->init_machine = hvf_accel_init;\n ac->allowed = &hvf_allowed;\n ac->gdbstub_supported_sstep_flags = hvf_gdbstub_sstep_flags;\n+#ifdef HOST_X86_64\n+ hvf_kernel_irqchip = false;\n+#else\n+ hvf_kernel_irqchip = true;\n+#endif\n+ object_class_property_add(oc, \"kernel-irqchip\", \"on|off|split\",\n+ NULL, hvf_set_kernel_irqchip,\n+ NULL, NULL);\n+ object_class_property_set_description(oc, \"kernel-irqchip\",\n+ \"Configure HVF irqchip\");\n }\n \n static const TypeInfo hvf_accel_type = {\ndiff --git a/accel/stubs/hvf-stub.c b/accel/stubs/hvf-stub.c\nindex 42eadc5ca9..6bd08759ba 100644\n--- a/accel/stubs/hvf-stub.c\n+++ b/accel/stubs/hvf-stub.c\n@@ -10,3 +10,4 @@\n #include \"system/hvf.h\"\n \n bool hvf_allowed;\n+bool hvf_kernel_irqchip;\ndiff --git a/hw/arm/virt.c b/hw/arm/virt.c\nindex 50865e8115..391d5e6f76 100644\n--- a/hw/arm/virt.c\n+++ b/hw/arm/virt.c\n@@ -838,7 +838,7 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem)\n * interrupts; there are always 32 of the former (mandated by GIC spec).\n */\n qdev_prop_set_uint32(vms->gic, \"num-irq\", NUM_IRQS + 32);\n- if (!kvm_irqchip_in_kernel()) {\n+ if (!kvm_irqchip_in_kernel() && !hvf_irqchip_in_kernel()) {\n qdev_prop_set_bit(vms->gic, \"has-security-extensions\", vms->secure);\n }\n \n@@ -861,7 +861,8 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem)\n qdev_prop_set_array(vms->gic, \"redist-region-count\",\n redist_region_count);\n \n- if (!kvm_irqchip_in_kernel()) {\n+ if (!kvm_irqchip_in_kernel() &&\n+ !(hvf_enabled() && hvf_irqchip_in_kernel())) {\n if (vms->tcg_its) {\n object_property_set_link(OBJECT(vms->gic), \"sysmem\",\n OBJECT(mem), &error_fatal);\n@@ -872,7 +873,7 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem)\n ARCH_GIC_MAINT_IRQ);\n }\n } else {\n- if (!kvm_irqchip_in_kernel()) {\n+ if (!kvm_irqchip_in_kernel() && !hvf_irqchip_in_kernel()) {\n qdev_prop_set_bit(vms->gic, \"has-virtualization-extensions\",\n vms->virt);\n }\n@@ -2119,7 +2120,15 @@ static void finalize_gic_version(VirtMachineState *vms)\n accel_name = \"KVM with kernel-irqchip=off\";\n } else if (whpx_enabled()) {\n gics_supported |= VIRT_GIC_VERSION_3_MASK;\n- } else if (tcg_enabled() || hvf_enabled() || qtest_enabled()) {\n+ } else if (hvf_enabled()) {\n+ if (!hvf_irqchip_in_kernel()) {\n+ gics_supported |= VIRT_GIC_VERSION_2_MASK;\n+ }\n+ /* Hypervisor.framework doesn't expose EL2<->1 transition notifiers */\n+ if (!(!hvf_irqchip_in_kernel() && vms->virt)) {\n+ gics_supported |= VIRT_GIC_VERSION_3_MASK;\n+ }\n+ } else if (tcg_enabled() || qtest_enabled()) {\n gics_supported |= VIRT_GIC_VERSION_2_MASK;\n if (module_object_class_by_name(\"arm-gicv3\")) {\n gics_supported |= VIRT_GIC_VERSION_3_MASK;\n@@ -2161,6 +2170,8 @@ static void finalize_msi_controller(VirtMachineState *vms)\n vms->msi_controller = VIRT_MSI_CTRL_GICV2M;\n } else if (whpx_enabled()) {\n vms->msi_controller = VIRT_MSI_CTRL_GICV2M;\n+ } else if (hvf_enabled() && hvf_irqchip_in_kernel()) {\n+ vms->msi_controller = VIRT_MSI_CTRL_GICV2M;\n } else {\n vms->msi_controller = VIRT_MSI_CTRL_ITS;\n }\n@@ -2180,6 +2191,10 @@ static void finalize_msi_controller(VirtMachineState *vms)\n error_report(\"ITS not supported on WHPX.\");\n exit(1);\n }\n+ if (hvf_enabled() && hvf_irqchip_in_kernel()) {\n+ error_report(\"ITS not supported on HVF when using the hardware vGIC.\");\n+ exit(1);\n+ }\n }\n \n assert(vms->msi_controller != VIRT_MSI_CTRL_AUTO);\ndiff --git a/hw/intc/arm_gicv3_common.c b/hw/intc/arm_gicv3_common.c\nindex 9c3fb2f4bf..f7ba74e6d5 100644\n--- a/hw/intc/arm_gicv3_common.c\n+++ b/hw/intc/arm_gicv3_common.c\n@@ -33,6 +33,7 @@\n #include \"hw/arm/linux-boot-if.h\"\n #include \"system/kvm.h\"\n #include \"system/whpx.h\"\n+#include \"system/hvf.h\"\n \n \n static void gicv3_gicd_no_migration_shift_bug_post_load(GICv3State *cs)\n@@ -659,6 +660,8 @@ const char *gicv3_class_name(void)\n return \"kvm-arm-gicv3\";\n } else if (whpx_enabled()) {\n return TYPE_WHPX_GICV3;\n+ } else if (hvf_enabled() && hvf_irqchip_in_kernel()) {\n+ return TYPE_HVF_GICV3;\n } else {\n if (kvm_enabled()) {\n error_report(\"Userspace GICv3 is not supported with KVM\");\ndiff --git a/include/system/hvf.h b/include/system/hvf.h\nindex d3dcf088b3..dc8da85979 100644\n--- a/include/system/hvf.h\n+++ b/include/system/hvf.h\n@@ -26,8 +26,11 @@\n #ifdef CONFIG_HVF_IS_POSSIBLE\n extern bool hvf_allowed;\n #define hvf_enabled() (hvf_allowed)\n+extern bool hvf_kernel_irqchip;\n+#define hvf_irqchip_in_kernel() (hvf_kernel_irqchip)\n #else /* !CONFIG_HVF_IS_POSSIBLE */\n #define hvf_enabled() 0\n+#define hvf_irqchip_in_kernel() 0\n #endif /* !CONFIG_HVF_IS_POSSIBLE */\n \n #define TYPE_HVF_ACCEL ACCEL_CLASS_NAME(\"hvf\")\ndiff --git a/system/vl.c b/system/vl.c\nindex aa9a155041..d3f311eff8 100644\n--- a/system/vl.c\n+++ b/system/vl.c\n@@ -1778,6 +1778,8 @@ static void qemu_apply_legacy_machine_options(QDict *qdict)\n false);\n object_register_sugar_prop(ACCEL_CLASS_NAME(\"whpx\"), \"kernel-irqchip\", value,\n false);\n+ object_register_sugar_prop(ACCEL_CLASS_NAME(\"hvf\"), \"kernel-irqchip\", value,\n+ false);\n qdict_del(qdict, \"kernel-irqchip\");\n }\n \n", "prefixes": [ "v10", "04/14" ] }