Re: [Qemu-devel] [PATCH 00/28] target-ppc: Altivec 2.07

["Richard W.M. Jones" <rjones@redhat.com>]

On Thu, Feb 20, 2014 at 10:23:42AM +0000, Richard W.M. Jones wrote:
> I am now running a full libguestfs test which will take several hours,
> but it looks as if -- even if this test fails -- it won't be because
> of lack of emulation / missing instructions in qemu.

The tests ran.  I hit two bugs, but neither seems to be related to
qemu emulation.  Please push these patches into upstream qemu :-)

One bug is in btrfs and is related to page size being different (and
much larger) on ppc64.

The second bug is kind of interesting.  If you add ~ 256 disks (using
virtio-scsi), then it looks as if the firmware crashes.  The total
console output is below.  It looks as if "c >" is some kind of prompt.
qemu spins using 100% of CPU after this.

----------------------------------------------------------------------
Populating /vdevice methods
Populating /vdevice/vty@30000000
Populating /vdevice/nvram@71000000
C0580\b\b\b\b\bC05A0\b\b\b\b\bPopulating /pci@800000020000000
^M Adapters on 0800000020000000
                     00 0000 (D) : 106b 003f    serial bus [ usb-ohci ]
                     00 0800 (D) : 1af4 1004    virtio [ scsi ]
Populating /pci@800000020000000/scsi@1
       SCSI: Looking for devices
          100000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          101000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          102000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          103000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          104000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          105000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          106000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          107000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
          108000000000000 DISK     : "QEMU     QEMU HARDDISK    1.7."
C0600\b\b\b\b\bC0640\b\b\b\b\bC0690\b\b\b\b\bC06A0\b\b\b\b\bC06A8\b\b\b\b\bC06B0\b\b\b\b\bC06B8\b\b\b\b\bC06C0\b\b\b\b\b 

( 700 ) Program Exception [ 2e51cb00 ]


    R0 .. R7           R8 .. R15         R16 .. R23         R24 .. R31
000000002dca41ec   000000002dcfe058   0000000000000000   0000000000000006   
000000002e5198e0   000000002e5a91c0   0000000000000000   000000002dcb3900   
000000002dcbcb00   000000002dcb7b38   000000002dca0d10   000000002e51a050   
000000002e51cb00   000000002dd121f0   000000002dcbabd8   000000002dcb5e48   
000000002dcfe050   00000000000003d0   0000000000000056   0000000000000003   
000000002e51cb00   0000000000000000   000000002dcf2e4e   ffffffffffffffff   
0000000000000007   0000000000000000   000000002e5b0751   000000002e516010   
0000000000000003   0000000000000000   000000002dca0c30   000000002e50fae0   

    CR / XER           LR / CTR          SRR0 / SRR1        DAR / DSISR
        84000088   000000002dca1d40   000000002dcb7b38   0000000000000000   
0000000000000000   000000002dcb7b38   8000000000080000           00000000   


c > \x1b7
----------------------------------------------------------------------

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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