From: Chris <hap10@tycho.ncsc.mil>
To: Alex Williamson <alex.williamson@hp.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Subject: Re: [PATCH] pciback: restore PCI BARs on D3->D0 transition
Date: Tue, 03 Apr 2007 11:52:07 -0400 [thread overview]
Message-ID: <46127827.5060302@tycho.ncsc.mil> (raw)
In-Reply-To: <C22E24A2.4D74%Keir.Fraser@cl.cam.ac.uk>
Keir Fraser wrote:
> On 26/3/07 21:23, "Alex Williamson" <alex.williamson@hp.com> wrote:
>
>> don't think we necessarily need to go to that extent for pciback, but it
>> does appear to be pciback's responsibility to restore some state on the
>> card when transitioning out of D3, since it is effectively the driver
>> for the device.
>
> Well, really it's supposed to be a filter (and perhaps translator) for PCI
> config space accesses. It's not really a driver. But obviously something
> like this is needed.
Sorry for the delay, I've been out of the office for a while.
Indeed pciback was intended to be more of a filter than a driver. For
the time being it seems reasonable to implement BAR-related PM functions
in pciback as you've done (many thanks for that). As time permits I'll
double-check that your solution makes the fix in the most appropriate
location.
Cheers,
Chris
prev parent reply other threads:[~2007-04-03 15:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-26 19:29 [PATCH] pciback: restore PCI BARs on D3->D0 transition Alex Williamson
2007-03-26 20:23 ` Alex Williamson
2007-03-27 0:32 ` Keir Fraser
2007-04-03 15:52 ` Chris [this message]
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