[Xen-devel] Re: [PATCH] blkfront: Move blkif_interrupt into a tasklet.

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 09/23/2010 06:23 PM, Jeremy Fitzhardinge wrote:
> > Any developments with this? I've got a report of the exact same warnings
> > on RHEL6 guest. See
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=632802
> >
> > RHEL6 doesn't have the 'Move blkif_interrupt into a tasklet' patch, so
> > that can be ruled out. Unfortunately I don't have this reproducing on a
> > test machine, so it's difficult to debug.  The report I have showed that
> > in at least one case it occurred on boot up, right after initting the
> > block device. I'm trying to get confirmation if that's always the case.
> >
> > Thanks in advance for any pointers you might have.
> Yes, I see it even after reverting that change as well.  However I only
> see it on my domain with an XFS filesystem, but I haven't dug any deeper
> to see if that's relevant.
>
> Do you know when this appeared?  Is it recent?  What changes are in the
> rhel6 kernel in question?
It's got pretty much everything in stable-2.6.32.x, up to the 16 patch 
blkfront series you posted last July.  There are some RHEL-specific 
workarounds for PV-on-HVM, but for PV domains everything matches upstream.
Paolo

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