From mboxrd@z Thu Jan  1 00:00:00 1970
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To: Milton Miller <miltonm@bga.com>
From: Michael Neuling <mikey@neuling.org>
Subject: Re: [PATCH] SLB shadow buffer 
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Date: Sun, 06 Aug 2006 11:27:38 +1000
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> The SLB shadow buffer is a pure software construct recording the required 
> segment translations.  Registering a the shadow buffer informs the 
> hypervisor which entries are required when switching partitions, and may 
> allow it to recover the partition from a hardware error. 

What Milton said.  It's a high availability feature.

We can register volatile and persistent SLBs with PHYP.  PHYP will
invalidate volatile entries and replace persistent entries if it sees a
problem with them.  

Here I've only registered the 3 persistent (bolted) SLBs, as the
volatile SLBs can be handled with SLB faults in the kernel.

Mikey