linux-kernel - Re: [Xen-devel] [PATCH] Xen PCI fronted fixes for 2.6.39

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Message-ID: <1297953494.16356.1738.camel@zakaz.uk.xensource.com>
Date:	Thu, 17 Feb 2011 14:38:14 +0000
From:	Ian Campbell <Ian.Campbell@...citrix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Konrad Rzeszutek Wilk" <konrad@...nel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"Stefano Stabellini" <Stefano.Stabellini@...citrix.com>
Subject: Re: [Xen-devel] [PATCH] Xen PCI fronted fixes for 2.6.39

On Thu, 2011-02-17 at 14:28 +0000, Konrad Rzeszutek Wilk wrote:
> On Thu, Feb 17, 2011 at 08:29:04AM +0000, Ian Campbell wrote:
> > On Wed, 2011-02-16 at 22:17 +0000, Konrad Rzeszutek Wilk wrote:
> > > I am proposing these three patches for 2.6.39.
> > > 
> > > The first is to take advantage of the new method of requesting
> > > a Linux IRQ and providing the Xen PIRQ value. The second
> > > makes it possible for a PV guest to bootup if the backend has provided
> > > incorrect values. [*2]
> > 
> > I approve of being liberal in what is accepted but do we also have a
> > handle on why the backend is providing incorrect values in the first
> > place?
> 
> I got those fixed too - was using 'xen_irq_from_gsi' while
> it should have used 'xen_irq_from_pirq'. This was the new mechanism
> to obtain the vector values after .. 2.6.38-rc1 ish.. (as the
> GSI values now have the correct value of zero, and the vector value
> for MSI/MSI-X is written in the PIRQ entry).
> 
> But those patches are in a different branch (devel/xen-pciback-0.3).

Thanks, it may be worth co-referencing the front and backend fixes in
their respective commit messages.

Ian.


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