Re: Sanitize CPU-state when switching from virtual-8086 mode to othertask
From: H. Peter Anvin
Date: Tue Dec 31 2013 - 17:41:40 EST
On 12/31/2013 11:21 AM, Konrad Rzeszutek Wilk wrote:
> So, I am wondering if this is related to " x86/fpu: CR0.TS should be set before trap
> into PV guest's #NM exception handle" which does have a similar pattern - you
> do enough of the task switches and the FPU is screwed.
> See http://mid.gmane.org/1383720072-6242-1-git-send-email-gaoyang.zyh@xxxxxxxxxx
> (I thought there was a thread about this on LKML too but I can't
> find it).
That would be a bug in Xen, so I guess you're surmising a similar bug in
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