[Bug 42782] New: IO_PAGE_FAULT while starting xorg

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=42782

           Summary: IO_PAGE_FAULT while starting xorg
           Product: Virtualization
           Version: unspecified
    Kernel Version: 3.2.6
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
        AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
        ReportedBy: fuffi.il.fuffo@gmail.com
        Regression: No


Hi,

I got this error while doing startx with 3.2.6 kernel and I can't start xorg:

[   54.683907] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0
domain=0x0018 address=0x0000000220583200 flags=0x0010]

I saw the same error in this mailing list
(http://www.spinics.net/lists/kvm/msg48472.html) so I thought it was
the right ml for reporting this problem, am I wrong?

I attached the output of dmesg, lspci -vv and dmidecode.

disabling amd_iommu allow X to start but it's only a workaround.

This is the relevant part of my grub.cfg file:

# (0) Arch Linux
menuentry 'Arch Linux' {
 set root='(hd0,1)'; set legacy_hdbias='0'
 legacy_kernel   '/boot/vmlinuz-linux' '/boot/vmlinuz-linux'
'root=/dev/disk/by-uuid/a4259127-650c-4767-af64-9c86cdc1a5e1' 'ro'
'vga=773' 'amd_iommu_dump' '3'
 legacy_initrd '/boot/initramfs-linux.img' '/boot/initramfs-linux.img'

 # (1) Arch Linux
}


Thanks in advance,

EDM.

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