From nobody Mon Oct 5 01:56:32 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hyjDJ2QMgz5q1sB for ; Mon, 05 Oct 2026 01:56:32 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hyjDJ1yQ6z4Mh0 for ; Mon, 05 Oct 2026 01:56:32 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1791165392; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; 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Mon, 5 Oct 2026 01:56:32 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 6951uWMf017318 for virtualization@FreeBSD.org; Mon, 5 Oct 2026 01:56:32 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 299136] bhyve(8): GVT-d code claims discrete Intel Arc GPUs, so PCI passthrough using them fails Date: Mon, 05 Oct 2026 01:56:32 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: eppower@umich.edu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D299136 Bug ID: 299136 Summary: bhyve(8): GVT-d code claims discrete Intel Arc GPUs, so PCI passthrough using them fails Product: Base System Version: 15.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: bhyve Assignee: virtualization@FreeBSD.org Reporter: eppower@umich.edu Created attachment 275388 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D275388&action= =3Dedit This patch prevents gvt_d_probe from erroneously treating Intel dGPUs in the same way it handles iGPUs and instead dGPUs fall back to simple passthrough. Disclaimer: AI (Claude Opus 5.5) was used to help me solve a dGPU passthru issue using an Intel Arc A310 and bhyve - I believe it should help for any Intel dGPU passthrough scenario. This is related to bug 299135, in that the symptoms were simultaneously observed. I am not a software developer and co= uld not have developed this fix on my own. For my setup, this fix works and all= ows me to start a VM with a passthrough Intel dGPU. I've reviewed the Claude-generated bug report below and believe it to be factual and accurate, however if you find that you need additional information I'd of course be h= appy to supply anything I can. Description: I believe this to be similar to bug 296663. usr.sbin/bhyve/amd64/pci_gvt-d.c attaches its GVT-d handling to any passthrough device whose vendor is Intel and whose class is PCIC_DISPLAY (gvt_d_probe()). Discrete Intel GPUs (Arc / DG2) match too. bhyve then runs the integrated-GPU setup on them (graphics stolen memory, OpRegion, BDSM), which fails, and the VM does not start. On a host with no Intel integrated graphics, the stolen-memory sysctls report zero and passthrough of an Arc A310 (8086:56a6, subsystem 172f:4019) fails with: bhyve: gvt_d_setup_gsm: Unable to add Graphics Stolen Memory to E820 ta= ble (hpa 0x0 len 0x0) E820 map: ( 0) [ 0, 0] Reserved ( 1) [ 0, a0000] RAM ( 2) [ 100000, 10000000] RAM bhyve: gvt_d_init: Unable to setup Graphics Stolen Memory Device emulation initialization error: No such file or directory and bhyve exits with status 4. Passing through only the GPU's HDA function works, since it is not a display-class device. The same failure mode was reported on freebsd-virtualization in January 2025 for an Arc A380 on an AMD EPYC host (OpRegion errors in that case): https://lists.freebsd.org/archives/freebsd-virtualization/2025-January/0026= 59.html The probe is identical in releng/14.4, releng/15.1 and main (checked early October 2026). The DG2 device IDs are already present in usr.sbin/bhyve/pciids_intel_gpus.h, but they are not in the igd_devices[] table that the GVT-d code supports (which ends at Raptor Lake), so get_igd_ops() returns NULL for them. Environment: - FreeBSD 15.1-RELEASE amd64 - 2x Intel Xeon Platinum 8260 (no integrated graphics), Supermicro X11DPH-i, VT-d enabled - Sparkle Intel Arc A310 ECO 4GB low-profile (8086:56a6, 172f:4019), GPU at pci0:136:0:0, HDA at pci0:137:0:0, both reserved via pptdevs How to reproduce: bhyve -c 1 -m 256M -AHPw -S \ -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \ -s 0,hostbridge -s 31,lpc \ -s 2:0,passthru,136/0/0 -s 3:0,passthru,137/0/0 \ testvm bhyve exits within a second or two with the errors above. Fix: The attached patch (gvtd-skip-discrete.patch, against releng/15.1) makes gvt_d_probe() return ENXIO when get_igd_ops() finds no entry for the device, so only integrated GPUs listed in igd_devices[] are claimed by GVT-d. Other Intel display devices fall back to plain passthrough. Testing with the patch: - The same command keeps running; the GPU and its HDA function are assigned to the guest. - An Ubuntu 24.04 live guest with the GPU passed through: i915 binds and fully initializes the card (DMC, GuC and HuC firmware load, "GUC: submission enabled", "HuC: authenticated for all workloads", HDA component bound, MEI/GSC interface bound). - From that Linux guest, Intel's igsc tool read and updated the card's GSC firmware (DG02_2.2357 -> DG02_2.2359) through passthrough. Attachment: gvtd-skip-discrete.patch Back Matter: Here's a bit of text copied from bug report 299135 to provide = you with the human context- I have a Supermicro X11DPH-I mainboard (dual Cascade Lake Xeon board) with a discrete Intel X710-T2L 10GbE NIC installed. The X7= 10 supports SR-IOV, and I use multiple VFs on this NIC to support my jail networking. I also have a Sparkle A310 ECO GPU installed, which is an Intel Alchemist generation dGPU. The GPU is intended to provide hardware-accelera= ted transcoding for a VM running jellyfin. The host machine was originally brou= ght online with 14.3-RELEASE, then upgraded to 14.4-RELEASE, and most recently upgraded to 15.1-RELEASE. Across all versions I noted the same behavior - w= hen attempting to pass through the GPU to a VM (either with a native bhyve call= or using vm-bhyve), all VFs on my NIC immediately died a horrible death with messages like "Malicious driver detection" and complete loss of networking functionality. Bug 299135 addresses the loss of all VFs when bhyve starts u= p - this bug report relates to the observation that bhyve failed to start a VM successfully with the GPU attached - the VM would crash in < 4 seconds, lea= ving me without a working VM (and a set of jails orphaned from their network adapters). --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Mon Oct 5 02:40:06 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hykBZ3mLbz5q5f5 for ; Mon, 05 Oct 2026 02:40:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hykBZ3CKtz4TBM for ; 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Mon, 05 Oct 2026 02:40:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 6952e6QP086373 for ; Mon, 5 Oct 2026 02:40:06 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 6952e6vk086372 for virtualization@FreeBSD.org; Mon, 5 Oct 2026 02:40:06 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 299135] vmm(4): IOMMU host domain omits ARI functions > 7 (e.g. SR-IOV VFs); their DMA is blocked once PCI passthrough enables VT-d Date: Mon, 05 Oct 2026 02:40:06 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: linimon@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: assigned_to Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D299135 Mark Linimon changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|bugs@FreeBSD.org |virtualization@FreeBSD.org --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Mon Oct 5 13:11:05 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hz0Bf592pz4nGPZ for ; 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mx1.freebsd.org; none Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4hz0Bf18s7zL6x for ; Mon, 05 Oct 2026 13:11:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 695DB5Jg063642 for ; Mon, 5 Oct 2026 13:11:05 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 695DB5bN063641 for virtualization@FreeBSD.org; Mon, 5 Oct 2026 13:11:05 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291577] 15.0-RELEASE install panic on Hyper-V Generation 2 Virtual Machine (2+ vCPUs) Date: Mon, 05 Oct 2026 13:11:05 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: technik@centron.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291577 --- Comment #4 from centron GmbH - Technischer Support = --- (In reply to ShengYi Hung from comment #3) Yes, hw.vmbus.tlb_hcall=3D0 does indeed fix it.=20 Are there any negative implications with this, especially for firewall syst= ems like pfSense/OPNsense? --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Mon Oct 5 20:03:53 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hz9Lz0xZrz6vKt1 for ; 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mx1.freebsd.org; none Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4hz9Ly5KfLzbZF for ; Mon, 05 Oct 2026 20:03:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 695K3sK0007384 for ; Mon, 5 Oct 2026 20:03:54 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 695K3sU4007383 for virtualization@FreeBSD.org; Mon, 5 Oct 2026 20:03:54 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291577] 15.0-RELEASE install panic on Hyper-V Generation 2 Virtual Machine (2+ vCPUs) Date: Mon, 05 Oct 2026 20:03:53 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: aokblast@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291577 --- Comment #5 from ShengYi Hung --- (In reply to centron GmbH - Technischer Support from comment #4) It faills back to original IPI based flush instead of using hcall provided = by hyperv. It should be slower. Could you please check https://reviews.freebsd.org/D60380 fix the problem or not. Remember to dele= te the sysctl knob before trying it. --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Tue Oct 6 00:53:36 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hzHnD2s7Sz6vhgg for ; Tue, 06 Oct 2026 00:53:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hzHnD29HLz4MXb for ; Tue, 06 Oct 2026 00:53:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; 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Tue, 06 Oct 2026 00:53:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 6960raZM074093 for ; Tue, 6 Oct 2026 00:53:36 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 6960ratc074092 for virtualization@FreeBSD.org; Tue, 6 Oct 2026 00:53:36 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 299136] bhyve(8): GVT-d code claims discrete Intel Arc GPUs, so PCI passthrough using them fails Date: Tue, 06 Oct 2026 00:53:36 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: eppower@umich.edu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D299136 --- Comment #1 from Erik Power --- (In reply to Erik Power from comment #0) On closer inspection, I believe this IS a duplicate of bug 296663. Claude provided the same patch for both... and it solved the issue for both. I do = not advocate for using the patch as-is: too many unresolved questions about provenance and ownership. However, the patch is only 2 lines and clearly illustrates that a simple check for iGPU vs dGPU is all that's needed to en= able Intel dGPU passthru. I'd be happy to test a human-written patch if a qualif= ied developer decides to pick this up and solve the issue with code that's acceptable for inclusion in the FreeBSD base. --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Tue Oct 6 12:17:37 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hzZyW1H1Nz6vFPq for ; Tue, 06 Oct 2026 12:17:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hzZyW0qPHz3MX4 for ; 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Tue, 06 Oct 2026 12:17:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 696CHcbw064292 for ; Tue, 6 Oct 2026 12:17:38 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 696CHclX064291 for virtualization@FreeBSD.org; Tue, 6 Oct 2026 12:17:38 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291577] 15.0-RELEASE install panic on Hyper-V Generation 2 Virtual Machine (2+ vCPUs) Date: Tue, 06 Oct 2026 12:17:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: bsdacc@pischem.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291577 --- Comment #6 from Monviech --- Hello ShengYi Hung, I still had the same hyper-v setup available with OPNsense VMs where it crashed. I reproduced the crash with first two cores in a new VM without any changes, and afterwards tried your patch in a new kernel. Afterwards the cr= ash did not happen anymore with two cores. For my setup it seems to fix it. Thank you. --=20 You are receiving this mail because: You are the assignee for the bug.=