public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
* Kernel 6.7 regression doesn't boot if using AMD eGPU
@ 2024-04-13 22:04 Eric Wagner
  2024-04-14  0:01 ` Bagas Sanjaya
                   ` (2 more replies)
  0 siblings, 3 replies; 17+ messages in thread
From: Eric Wagner @ 2024-04-13 22:04 UTC (permalink / raw)
  To: Joerg Roedel, Will Deacon
  Cc: Suravee Suthikulpanit, Robin Murphy, iommu, linux-kernel


[-- Attachment #1.1: Type: text/plain, Size: 717 bytes --]

On my Thinkpad T14s G3 AMD (Ryzen 7 6850U) laptop connected to an AMD RX
580 in Akitio Node Thunderbolt 3 eGPU. Booting with the eGPU connected
hangs on kernels 6.7 and 6.8, but worked on 6.6. For debugging, I find that
adding the kernel parameter amd_iommu=off seems to fix the issue and allows
booting with the eGPU on 6.7.

I tried bisecting the issue between 6.6 and 6.7 and ended up with:
"e8cca466a84a75f8ff2a7a31173c99ee6d1c59d2 is the first bad commit" in the
attached. This seems to indicate an amd iommu issue.

Two others also reported the same issue on AMD Ryzen 7 7840 with AMD RX
6000 connected as eGPU (https://gitlab.freedesktop.org/drm/amd/-/issues/3182
).

Let me know if you need more information.

[-- Attachment #1.2: Type: text/html, Size: 884 bytes --]

[-- Attachment #2: bisect.log --]
[-- Type: text/x-log, Size: 6298 bytes --]

Bisecting: 366 revisions left to test after this (roughly 9 steps)
[74e9347ebc5be452935fe4f3eddb150aa5a6f4fe] Merge tag 'loongarch-fixes-6.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Bisecting: 182 revisions left to test after this (roughly 8 steps)
[f6176471542d991137543af2ef1c18dae3286079] Merge tag 'mtd/fixes-for-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Bisecting: 87 revisions left to test after this (roughly 7 steps)
[fe3cfe869d5e0453754cf2b4c75110276b5e8527] Merge tag 'phy-fixes-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Bisecting: 43 revisions left to test after this (roughly 6 steps)
[c76c067e488ccd55734c3e750799caf2c5956db6] s390/pci: Use dma-iommu layer
Bisecting: 27 revisions left to test after this (roughly 5 steps)
[aa5cabc4ce8e6b45d170d162dc54b1bac1767c47] Merge tag 'arm-smmu-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into arm/smmu
Bisecting: 14 revisions left to test after this (roughly 4 steps)
[bbc70e0aec287e164344b1a071bd46466a4f29b3] iommu/dart: Remove the force_bypass variable
Bisecting: 9 revisions left to test after this (roughly 3 steps)
[e82c175e63229ea495a0a0b5305a98b5b6ee5346] Revert "iommu/vt-d: Remove unused function"
Bisecting: 5 revisions left to test after this (roughly 2 steps)
[92bce97f0c341d3037b0f364b6839483f6a41cae] s390/pci: Fix reset of IOMMU software counters
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[3613047280ec42a4e1350fdc1a6dd161ff4008cc] Merge tag 'v6.6-rc7' into core
Bisecting: 2 revisions left to test after this (roughly 1 step)
[f7da9c081517daba70f9f9342e09d7a6322ba323] iommu/tegra-smmu: Drop unnecessary error check for for debugfs_create_dir()
Bisecting: 1 revision left to test after this (roughly 1 step)
[9e13ec61de2a51195b122a79461431d8cb99d7b5] iommu/virtio: Add __counted_by for struct viommu_request and use struct_size()
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[6e6c6d6bc6c96c2477ddfea24a121eb5ee12b7a3] iommu: Avoid unnecessary cache invalidations
e8cca466a84a75f8ff2a7a31173c99ee6d1c59d2 is the first bad commit
commit e8cca466a84a75f8ff2a7a31173c99ee6d1c59d2
Merge: 6e6c6d6bc6 f7da9c0815 aa5cabc4ce 9e13ec61de e82c175e63 cedc811c76 3613047280 92bce97f0c
Author: Joerg Roedel <jroedel@suse.de>
Date:   Fri Oct 27 09:13:40 2023 +0200

    Merge branches 'iommu/fixes', 'arm/tegra', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd', 'core' and 's390' into next

 Documentation/admin-guide/kernel-parameters.txt    |   9 +-
 .../devicetree/bindings/iommu/arm,smmu.yaml        |   2 +
 arch/arm/configs/multi_v7_defconfig                |   1 -
 arch/arm/configs/tegra_defconfig                   |   1 -
 arch/powerpc/kernel/iommu.c                        |  53 +-
 arch/s390/include/asm/pci.h                        |  11 -
 arch/s390/include/asm/pci_clp.h                    |   3 +
 arch/s390/include/asm/pci_dma.h                    | 121 +--
 arch/s390/pci/Makefile                             |   2 +-
 arch/s390/pci/pci.c                                |  35 +-
 arch/s390/pci/pci_bus.c                            |   5 -
 arch/s390/pci/pci_debug.c                          |  12 +-
 arch/s390/pci/pci_dma.c                            | 746 ---------------
 arch/s390/pci/pci_event.c                          |  17 +-
 arch/s390/pci/pci_sysfs.c                          |  19 +-
 drivers/iommu/Kconfig                              |  15 +-
 drivers/iommu/Makefile                             |   1 -
 drivers/iommu/amd/Kconfig                          |   9 -
 drivers/iommu/amd/Makefile                         |   1 -
 drivers/iommu/amd/amd_iommu.h                      |  35 +-
 drivers/iommu/amd/amd_iommu_types.h                |  52 +-
 drivers/iommu/amd/init.c                           | 117 +--
 drivers/iommu/amd/io_pgtable_v2.c                  |   8 +-
 drivers/iommu/amd/iommu.c                          | 577 +++++-------
 drivers/iommu/amd/iommu_v2.c                       | 996 ---------------------
 drivers/iommu/apple-dart.c                         | 138 +--
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c    |  71 +-
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c        | 251 +++---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h        |  17 +-
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c         |   2 +
 drivers/iommu/arm/arm-smmu/qcom_iommu.c            |  45 +-
 drivers/iommu/dma-iommu.c                          | 200 ++++-
 drivers/iommu/exynos-iommu.c                       |  83 +-
 drivers/iommu/fsl_pamu_domain.c                    |  41 +-
 drivers/iommu/intel/debugfs.c                      | 215 ++++-
 drivers/iommu/intel/iommu.c                        |  19 +-
 drivers/iommu/intel/iommu.h                        |  14 +
 drivers/iommu/iommu.c                              | 455 +++++-----
 drivers/iommu/iommufd/selftest.c                   |  30 +-
 drivers/iommu/iova.c                               |  95 +-
 drivers/iommu/ipmmu-vmsa.c                         |  72 +-
 drivers/iommu/msm_iommu.c                          |  35 +-
 drivers/iommu/mtk_iommu.c                          |  35 +-
 drivers/iommu/mtk_iommu_v1.c                       |  28 +-
 drivers/iommu/omap-iommu.c                         |  69 +-
 drivers/iommu/omap-iommu.h                         |   2 +-
 drivers/iommu/rockchip-iommu.c                     |  59 +-
 drivers/iommu/s390-iommu.c                         | 424 ++++++++-
 drivers/iommu/sprd-iommu.c                         |  36 +-
 drivers/iommu/sun50i-iommu.c                       |  80 +-
 drivers/iommu/tegra-gart.c                         | 371 --------
 drivers/iommu/tegra-smmu.c                         |  58 +-
 drivers/iommu/virtio-iommu.c                       |   4 +-
 drivers/memory/tegra/mc.c                          |  34 -
 drivers/memory/tegra/tegra20.c                     |  28 -
 include/linux/amd-iommu.h                          | 120 ---
 include/linux/iommu.h                              |  38 +-
 include/soc/tegra/mc.h                             |  26 -
 58 files changed, 2138 insertions(+), 3905 deletions(-)
 delete mode 100644 arch/s390/pci/pci_dma.c
 delete mode 100644 drivers/iommu/amd/iommu_v2.c
 delete mode 100644 drivers/iommu/tegra-gart.c

^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2024-04-18  5:01 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-04-13 22:04 Kernel 6.7 regression doesn't boot if using AMD eGPU Eric Wagner
2024-04-14  0:01 ` Bagas Sanjaya
2024-04-15  8:04 ` Joerg Roedel
2024-04-15 16:30 ` Jason Gunthorpe
2024-04-15 18:57   ` Eric Wagner
2024-04-15 21:44     ` Robin Murphy
2024-04-16  0:39       ` Jason Gunthorpe
     [not found]         ` <CAHudX3x-ofB=-K6UwWpf4r7Ge9AQbvLQ2qq2C7N-R5LG2qMz7Q@mail.gmail.com>
2024-04-16 10:53           ` Vasant Hegde
2024-04-16 11:39             ` Jason Gunthorpe
2024-04-17  2:16             ` Eric Wagner
2024-04-17  8:57               ` Vasant Hegde
2024-04-16 11:25         ` Robin Murphy
2024-04-16 11:49           ` Jason Gunthorpe
2024-04-17  8:48             ` Vasant Hegde
2024-04-16 12:44           ` Vasant Hegde
2024-04-17 10:36             ` Robin Murphy
2024-04-18  5:01               ` Vasant Hegde

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox