ACK: Cleaning up Xen OSXSAVE hacks on previous releases

Colin Ian King colin.king at
Fri Sep 21 16:11:40 UTC 2012

On 21/09/12 16:28, Stefan Bader wrote:
> Following up with the various releases. Since only kernel
> versions between 2.6.30 and 2.6.39 require any hack this
> reverts the new work-around from Precise, the old hack
> from Oneiric and pulls in the upstream change that always
> masks both xsave bits from cpuid. The second Lucid patch
> optionally picks the upstream change that would allow to
> use xsave when the HV supports it (this time it seemed to
> be the correct way to check).
> There is not anything to revert on Lucid master but it would
> be one step further to be able to get away from the need for
> the ec2 topic branch carrying all those special Xen patches.
> -Stefan
I'm Acking all of these patches too.

Acked-by: Colin Ian King <colin.king at>

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