* ia64 tripping over BUG_ON from cset 9224
@ 2006-03-14 5:16 Alex Williamson
2006-03-14 14:38 ` Keir Fraser
0 siblings, 1 reply; 2+ messages in thread
From: Alex Williamson @ 2006-03-14 5:16 UTC (permalink / raw)
To: Keir Fraser; +Cc: xen-devel, xen-ia64-devel
When booting an ia64 guest domain on current xen-unstable.hg we hit
BUG_ON(info->rq != NULL) in blkfront/vbd.c:xlvbd_alloc_gendisk().
Skipping this BUG_ON allows a domU to boot normally using a file backed
vbd. Is this BUG_ON really necessary, or are we missing something
important here on ia64? Thanks,
Alex
--
Alex Williamson HP Linux & Open Source Lab
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: ia64 tripping over BUG_ON from cset 9224
2006-03-14 5:16 ia64 tripping over BUG_ON from cset 9224 Alex Williamson
@ 2006-03-14 14:38 ` Keir Fraser
0 siblings, 0 replies; 2+ messages in thread
From: Keir Fraser @ 2006-03-14 14:38 UTC (permalink / raw)
To: Alex Williamson; +Cc: xen-devel, xen-ia64-devel
On 14 Mar 2006, at 05:16, Alex Williamson wrote:
> When booting an ia64 guest domain on current xen-unstable.hg we hit
> BUG_ON(info->rq != NULL) in blkfront/vbd.c:xlvbd_alloc_gendisk().
> Skipping this BUG_ON allows a domU to boot normally using a file backed
> vbd. Is this BUG_ON really necessary, or are we missing something
> important here on ia64? Thanks,
I fixed this now (changeset 9226). The blkfront_info structure wasn't
being initialised to zeroes on allocation, so the BUG_ON was spuriously
triggering if you got unlucky.
-- Keir
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