From: Bjorn Helgaas <helgaas@kernel.org>
To: linux-pci@vger.kernel.org
Cc: Alex Williamson <alex.williamson@redhat.com>,
Athul Krishna <athul.krishna.kr@protonmail.com>
Subject: [bugzilla-daemon@kernel.org: [Bug 220010] New: Regression: 6.14.2 breaks PCI passthrough, qemu-system-x86_64: no available reset mechanism]
Date: Tue, 15 Apr 2025 18:44:49 -0500 [thread overview]
Message-ID: <20250415234449.GA45571@bhelgaas> (raw)
Forwarding to linux-pci just for completeness.
https://git.kernel.org/cgit/linux/kernel/git/pci/pci.git/commit/?id=bc0b828ef6e5
is queued on pci/for-linus for v6.15 and stable.
----- Forwarded message from bugzilla-daemon@kernel.org -----
Subject: [Bug 220010] New: Regression: 6.14.2 breaks PCI passthrough,
qemu-system-x86_64: no available reset mechanism
https://bugzilla.kernel.org/show_bug.cgi?id=220010
Created attachment 307958
--> https://bugzilla.kernel.org/attachment.cgi?id=307958&action=edit
lspci
Device: Asus Zephyrus GA402RJ
dGPU: RX 6700S
Kernel: 6.14.2
03:00.0: dGPU (IOMMU Group 16)
03:00.1: GPU Audio Controller (IOMMU Group 17)
qemu-system-x86_64: vfio: Cannot reset device 0000:03:00.1, no available reset
mechanism.
qemu-system-x86_64: vfio: Cannot reset device 0000:03:00.0, no available reset
mechanism.
BISECTED: 792bd08a41bdc309e08ff4d429f670cbb30f2b63
03:00.0 does have `bus` in `03:00.0/reset_method`, and `03:00.1` does not have
`03:00.1/reset` file.
Removing `03:00.1` from PCI passthrough still shows error:
qemu-system-x86_64: vfio: Cannot reset device 0000:03:00.0, no available reset
mechanism.
Attached lspci -vv output
----- End forwarded message -----
reply other threads:[~2025-04-15 23:44 UTC|newest]
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