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Re: [Qemu-devel] [PATCH] s390/ipl: Fix spurious errors in virtio
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From: |
Andreas Färber |
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Subject: |
Re: [Qemu-devel] [PATCH] s390/ipl: Fix spurious errors in virtio |
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Date: |
Fri, 31 May 2013 18:34:15 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 |
Am 23.05.2013 13:51, schrieb Christian Borntraeger:
> With the ccw ipl code sometimes an error message like
> "virtio: trying to map MMIO memory" or
> "Guest moved used index from %u to %u" appeared. Turns out
> that the ccw bios did not zero out the vring, which might
> cause stale values in avail->idx and friends, especially
> on reboot.
>
> Lets zero out the relevant fields. To activate the patch we
> need to rebuild s390-ccw.img as well.
>
> Signed-off-by: Christian Borntraeger <address@hidden>
Tested-by: Andreas Färber <address@hidden>
Indeed no such errors any more, but I'm still seeing other issues with
rebooting some initrds (BNC#812983).
Andreas
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