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xen-devel
Re: [Xen-devel] Re: [PATCH] Update cr3 in PAE mode when guest walk succe
On 10/21/2009 11:50 AM, Tim Deegan wrote:
Hi,
At 10:46 +0100 on 21 Oct (1256121960), Paolo Bonzini wrote:
I suppose this patch is also needed when running 32-on-64. In that
case, shouldn't the test be
#if GUEST_PAGING_LEVELS>= 3
rather than "== 3"?
No, '==' is correct. GUEST_PAGING_LEVELS refers to the layout of the
_guest's_ pagetables, not the shadows. GUEST_PAGING_LEVELS == 4 means
the guest is using full 64-bit pagetables, which don't have this quirk.
Right, I should have read arch/x86/mm/shadow/Makefile.
Thanks,
Paolo
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