Re: [Xen-devel] [win-pv-devel] Question about windows domU long boot time in xen and help for update libxl virtio patch (for a test)

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell [mailto:ian.campbell@xxxxxxxxxx]
> Sent: 11 May 2015 09:42
> To: Wei Liu
> Cc: Paul Durrant; Fabio Fantoni; xen-devel; win-pv-
> devel@xxxxxxxxxxxxxxxxxxxx; Anthony Perard; Stefano Stabellini
> Subject: Re: [win-pv-devel] Question about windows domU long boot time in
> xen and help for update libxl virtio patch (for a test)
> 
> On Sat, 2015-05-09 at 14:28 +0100, Wei Liu wrote:
> > On Fri, May 08, 2015 at 05:47:25PM +0100, Paul Durrant wrote:
> > > I'm using the seabios image from the Xen build. Turns out that it's
> > built with CONFIG_ATA_DMA off (because that's not set when you run
> > make defconfig). Turning that on manually in the config and rebuilding
> > makes things a *lot* faster :-)
> > >
> >
> > Maybe we should turn that on in our build?
> 
> Right now we just consume the upstream defconfig without any
> modifications, so my preference would be to try and get them to enable
> ATA_DMA by default (i.e. by sending a patch).
> 
> If they don't want to do this for some reason (and those reasons don't
> apply to us) then we should consider tweaking the config locally.
> 
> NB many distros want to ship only a single image, so getting this turned
> on globally would be a better approach.
> 

Agreed. I'll see if I can formulate a patch sometime this week.

  Paul

> Ian.

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