[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98901

            Bug ID: 98901
           Summary: amdgpu doesn't reinitialize after reboot in Xen PV
                    DomU
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: msgctl@centzontotochtin.org

Created attachment 128264
  --> https://bugs.freedesktop.org/attachment.cgi?id=128264&action=edit
Logs from Xen Dom0 and affected DomU

I'm not sure whether this is a Xen or amdgpu bug.

amdgpu consistently does not reinitialize after paravirtualized Xen DomU
reboots. It's a PCI passthrough setup - the physical machine does not reboot
and it can't reset PCI Express devices.

This setup is working fine until I need to reboot the affected DomU.

DomU:
    Debian testing (29-11-2016)
    Linux version 4.7.0-1-amd64

Dom0:
    Debian GNU/Linux 8.6 (jessie)
    Linux 3.16.0-4-amd64

Graphics adapter:
    Radeon RX480

I attached an archive with all the relevant logs I could gather. Please contact
me for further information/testing.

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[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

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https://bugs.freedesktop.org/show_bug.cgi?id=98901

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Can you try a more recent kernel?  4.8 or 4.9?

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[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

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https://bugs.freedesktop.org/show_bug.cgi?id=98901

--- Comment #2 from Mateusz Zalega <msgctl@centzontotochtin.org> ---
Created attachment 128271
  --> https://bugs.freedesktop.org/attachment.cgi?id=128271&action=edit
domU dmesg linux-4.9.0-rc7

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[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

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https://bugs.freedesktop.org/show_bug.cgi?id=98901

--- Comment #3 from Mateusz Zalega <msgctl@centzontotochtin.org> ---
(In reply to Alex Deucher from comment #1)
> Can you try a more recent kernel?  4.8 or 4.9?

I added a DomU startup log from a 4.9 series kernel. The result is the same in
4.8.

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[Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU

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https://bugs.freedesktop.org/show_bug.cgi?id=98901

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #4 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/116.

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