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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)

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.


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