[PATCHv3 0/9] Support Xen versions up to xen-4.1

Petr Tesarik ptesarik at suse.cz
Tue Aug 28 06:02:20 EDT 2012

Dne Po 27. srpna 2012 18:19:20 Trapp, Norbert napsal(a):
> > I could also add the performance improvements, but I'm afraid it would
> > make for an incremental patch, so let's wait until the filtering is
> > finally right.
> Alright to abandon the performance improvements for the time being
> but I would vote for adding the 1GB page recognition. That is:
> ...(pgd_entry & _PAGE_PSE)... in kvto_xen_x86_64. I think you would need
> a huge amount of memory to recognize this problem.

Oh! I missed the part that adds support for 1G pages. This is not merely 
performance improvement, but a bugfix - the routine is not able to translate 
1G mappings without the change.

The thing with 1G pages is that they are not available on all platforms (AFAIK 
only AMD has them).

Anyway, it should be two patches, in fact. Please stay tuned.

Petr Tesarik
SUSE Linux

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