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List:       kvm
Subject:    Re: [PATCH 4/4] Fix task switching.
From:       Gleb Natapov <gleb () redhat ! com>
Date:       2009-03-31 15:22:40
Message-ID: 20090331152240.GO25718 () redhat ! com
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On Tue, Mar 31, 2009 at 05:21:16PM +0200, Kohl, Bernhard (NSN - DE/Munich) wrote:
> Bernhard Kohl wrote:
> > 
> > Jan Kiszka wrote:
> > > 
> > > Gleb Natapov wrote:
> > > > The patch fixes two problems with task switching.
> > > > 1. Back link is written to a wrong TSS.
> > > > 2. Instruction emulation is not needed if the reason for 
> > task switch
> > > >    is a task gate in IDT and access to it is caused by an 
> > > external even.
> > > > 
> > > > 2 is currently solved only for VMX since there is not 
> > > reliable way to
> > > > skip an instruction in SVM. We should emulate it instead.
> > > 
> > > Does this series fix all issues Bernhard, Thomas and Julian 
> > > stumbled over?
> > > 
> > > Jan
> > 
> > I will try this today. Thanks.
> > 
> Yes, it works for us (Thomas + Bernhard).
> 
Great. Thanks for testing.

--
			Gleb.
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