Re: [PATCH] xen: core dom0 support
From: Anthony Liguori
Date: Wed Mar 04 2009 - 12:34:32 EST
Jeremy Fitzhardinge wrote:
Nick Piggin wrote:
It really depends on the workload. There's three cases to consider:
software shadow pagetables, hardware nested pagetables, and Xen direct
pagetables. Even now, Xen's (highly optimised) shadow pagetable code
generally out-performs modern nested pagetables, at least when running
Windows (for which that code was most heavily tuned).
Can you point to benchmarks? I have a hard time believing this.
How can shadow paging beat nested paging assuming the presence of large
pages?
Regards,
Anthony Liguori
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