From: Mario Limonciello <mario.limonciello@amd.com>
To: Bjorn Helgaas <helgaas@kernel.org>,
Alex Deucher <alexander.deucher@amd.com>
Cc: Oz Tiram <oz@shift-computing.de>, <linux-pci@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <amd-gfx@lists.freedesktop.org>,
<dri-devel@lists.freedesktop.org>,
Mario Limonciello <mario.limonciello@amd.com>,
Reza Nikzad Chaleshori <rezanikzadch@gmail.com>
Subject: [PATCH 0/2] Fix amdgpu detection of pci=realloc
Date: Mon, 19 Oct 2026 20:44:30 -0500 [thread overview]
Message-ID: <20261019-vfct-regression-v1-0-5a63ddd378dd@amd.com> (raw)
amdgpu needs to know the bus number the platform assigned a device to
be able to match firmware images against the right device.
This was previously adjusted to be a soft filter due to
commit 11c141672045f ("drm/amdgpu: Fix VFCT bus number matching with
soft filter") where if everything but the number matched to take a device.
This however fails when there are two identical devices. Instead save the
initial bus number to the PCI device structure and then match that.
Link: https://lore.kernel.org/linux-pci/20261015124843.203905-1-mario.limonciello@amd.com/
Link: https://lore.kernel.org/amd-gfx/20261019194106.2796150-1-alexander.deucher@amd.com/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
Mario Limonciello (2):
PCI: Preserve the initial bus number in pci_dev
drm/amdgpu: Match VFCT using initial PCI bus number
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 17 +++--------------
drivers/pci/probe.c | 1 +
include/linux/pci.h | 1 +
3 files changed, 5 insertions(+), 14 deletions(-)
---
base-commit: 87bba57a9f33e2b5e90d4ad70973675333182a2c
change-id: 20261019-vfct-regression-2142fc52852a
Best regards,
--
Mario Limonciello <mario.limonciello@amd.com>
next reply other threads:[~2026-10-20 1:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-20 1:44 Mario Limonciello [this message]
2026-10-20 1:44 ` [PATCH 1/2] PCI: Preserve the initial bus number in pci_dev Mario Limonciello
2026-10-20 1:44 ` [PATCH 2/2] drm/amdgpu: Match VFCT using initial PCI bus number Mario Limonciello
2026-10-20 2:06 ` [PATCH 0/2] Fix amdgpu detection of pci=realloc Mario Limonciello
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