From: "Andreas Färber" <afaerber@suse.de>
To: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: aliguori@us.ibm.com, Alexander Graf <agraf@suse.de>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH] s390/ipl: Fix spurious errors in virtio
Date: Fri, 31 May 2013 18:34:15 +0200 [thread overview]
Message-ID: <51A8D107.6070201@suse.de> (raw)
In-Reply-To: <1369309901-418-1-git-send-email-borntraeger@de.ibm.com>
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 <borntraeger@de.ibm.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Indeed no such errors any more, but I'm still seeing other issues with
rebooting some initrds (BNC#812983).
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
next prev parent reply other threads:[~2013-05-31 16:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 11:51 [Qemu-devel] [PATCH] s390/ipl: Fix spurious errors in virtio Christian Borntraeger
2013-05-31 16:34 ` Andreas Färber [this message]
2013-06-03 15:44 ` Anthony Liguori
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