RE: [Xen-ia64-devel] [PATCH] Reload KRs when domain switch

["Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>]

Another good catch!

At first I was confused by this:  The guest has owned the KR's
for a long time (Eddie submitted a patch a couple of months
ago I think).  However, until recently, xenlinux wasn't actually
using the KRs!

Dan 

> -----Original Message-----
> From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf 
> Of Tian, Kevin
> Sent: Monday, October 31, 2005 6:55 PM
> To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-ia64-devel] [PATCH] Reload KRs when domain switch
> 
> Hi, Dan,
> 
> This is next block which made dom0 in nested dtlb miss forever. The
> reason is that KR is not reloaded after domain switch, and 
> thus invalid
> KRs are used. Several TLB miss related handlers in guest depend on KR7
> to walk current page table. Then invalid KR value made everything
> messed.
> 
> Signed-off-by Kevin Tian <Kevin.tian@xxxxxxxxx>
> 
> Thanks,
> Kevin
> 

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