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Re: [Qemu-devel] [PATCH 00/15] qdev: make reset semantics more clear and


From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH 00/15] qdev: make reset semantics more clear and consistent, reset qbuses under virtio devices
Date: Wed, 9 Jan 2013 23:40:20 +0200

On Wed, Jan 09, 2013 at 10:22:58PM +0100, Paolo Bonzini wrote:
> Il 09/01/2013 21:40, Anthony Liguori ha scritto:
> >> > Yes, but this can only be done after looking at all PCI devices that
> >> > have buses below (of which the bridge is a special case).  And Anthony
> >> > also metioned using a new method of PCIDevice instead of device_reset.
> > Sorry, what's the bug here?  Is this a reset bug with cold reset or with
> > a form of warm reset?
> 
> Warm reset (virtio status register reset) of virtio-scsi wasn't
> propagated down to the SCSI bus.  I fixed it using qdev_reset_all, but
> now I'll do it manually in the HBA.  I'm fine with that as long as all
> buses move away from device_reset.
> 
> Paolo

You also pointed out some bug related to status register handling in virtio
on s390, right?

-- 
MST



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