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List:       linux-virtualization
Subject:    [patch 3/9] Guest page hinting: volatile page cache.
From:       schwidefsky () de ! ibm ! com (Martin Schwidefsky)
Date:       2006-09-18 1:08:17
Message-ID: 1158566897.5728.2.camel () localhost
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On Fri, 2006-09-15 at 13:50 -0400, Chuck Ebbert wrote:
> > I wonder which trick you use, since there is only one page table one
> > i386 I can only imagine that you are tracking all page tables of the
> > guest.
> 
> AMD K8 with the SVM feature has host and guest page tables and
> address-space identifiers for the guests so their global TLB flushes
> can be limited to their own address space...

Yeah, I know about the nested page tables on K8. But VMware will not
restrict themselves to K8 only, so they need a clever way to implement
shadow page tables on i386 chips without this feature.

-- 
blue skies,
  Martin.

Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH

"Reality continues to ruin my life." - Calvin.



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