Re: [Xen-devel] [for-xen-4.5 PATCH] Ignore non-zero data in unused xsave area.

2014-11-18 Thread Andrew Cooper
On 18/11/14 16:32, Konrad Rzeszutek Wilk wrote: > On Tue, Nov 18, 2014 at 10:26:31AM -0500, Don Koch wrote: >> If we restore an xsave area from an older xen that has a larger >> size than the xcr0 bit call for, it is possible to have non-zero >> data in the unused area if an xsave has ever been don

Re: [Xen-devel] [for-xen-4.5 PATCH] Ignore non-zero data in unused xsave area.

2014-11-18 Thread Konrad Rzeszutek Wilk
On Tue, Nov 18, 2014 at 10:26:31AM -0500, Don Koch wrote: > If we restore an xsave area from an older xen that has a larger > size than the xcr0 bit call for, it is possible to have non-zero > data in the unused area if an xsave has ever been done that used > that area (e.g. during a context switch