Messages in this thread | | | Subject | Re: [1/7] Xen VMM #3: add ptep_establish_new to make va available | From | Benjamin Herrenschmidt <> | Date | Wed, 01 Dec 2004 09:49:51 +1100 |
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On Tue, 2004-11-30 at 02:06 +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.
I would rather move toward that patch that David Miller proposed a while ago that makes sure the necessary infos (mm, address, ...) are always passed to all PTE functions.
Is there also a need for ptep_establish and ptep_establish_new to be 2 different functions ?
Ben.
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