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

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 98901] amdgpu doesn't reinitialize after reboot in Xen PV DomU
Date: Tue, 29 Nov 2016 11:53:44 +0000	[thread overview]
Message-ID: <bug-98901-502@http.bugs.freedesktop.org/> (raw)

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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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