Re: [Xen-devel] [PATCH 1/1] Xen PV support for hugepages

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 4/11/08 15:41, "dcm@xxxxxxxx" <dcm@xxxxxxxx> wrote:

> This is the latest version of a patch that adds hugepage support to the Xen
> hypervisor in a PV environment.  It is against the latest xen-unstable tree
> on xenbits.xensource.com.  I believe this version addresses the comments
> made about the previous version of the patch.
> 
> Hugepage support must be enabled via the hypervisor command line option
> "allowhugepage".
> 
> It assumes the guest guarantees that the hugepage is physically aligned and
> contiguous.
> 
> There is currently no support in the tools for saving/restoring/migrating
> guests who use hugepages.
> 
> Note to the maintainers:  What else needs to be done for this patch to be
> considered for inclusion into the tree?

I cleaned it up, fixed some return codes, and applied as c/s 18756. It may
be worth Jan Beulich taking a quick look as the return-code conventions for
the get/put functions in mm.c is now rather convoluted. I think I got it
right but I'm not 100% sure. Indeed, Jan, it'd sure be nice to have some
comments explaining what the <0,=0,>0 codes mean from the various get/put
functions, and how they differ between the l1e variants and the others (I'm
pretty sure they do differ).

 -- Keir



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