Re: [Xen-devel] new domain builder breaks compatibility

[John Levon <levon@xxxxxxxxxxxxxxxxx>]

On Thu, Feb 01, 2007 at 10:04:43AM +0100, Gerd Hoffmann wrote:

> John Levon wrote:
> > To quote xen.h:
> > 
> > 495  *  9. There is guaranteed to be at least 512kB padding after the final
> > 496  *     bootstrap element. If necessary, the bootstrap virtual region is
> > 497  *     extended by an extra 4MB to ensure this.
> 
> > which, predictably enough, breaks Solaris, which tries to use this area as
> > ecratch memory during early boot.
> 
> The attached patch should fix this.

Does that ensure the 4Mb alignment too? We're expecting:

scratch_end = RNDUP((paddr_t)scratch_start + 512 * 1024, FOUR_MEG);

BTW what is dom->extra_pages intended for?

thanks,
john


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