Messages in this thread | | | Date | Thu, 18 Nov 2004 10:11:09 +0000 | From | Christoph Hellwig <> | Subject | Re: [patch 1] Xen core patch : ptep_establish_new |
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On Wed, Nov 17, 2004 at 11:46:50PM +0000, Ian Pratt wrote: > > This patch adds 'ptep_establish_new', in keeping with the > existing 'ptep_establish', but for use where a mapping is being > established where there was previously none present. This > function is useful (rather than just using set_pte) because > having the virtual address available enables a very important > optimisation for arch-xen. We introduce > HAVE_ARCH_PTEP_ESTABLISH_NEW and define a generic implementation > in asm-generic/pgtable.h, following the pattern of the existing > ptep_establish.
What would be the problem of always passing the virtual address to ptep_establish? We already have a rather twisted maze of pte manipulation macros.
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