[PATCH 2/7] Add various hugetlb page table fix
catalin.marinas at arm.com
Mon Feb 6 11:26:56 EST 2012
On Wed, Feb 01, 2012 at 03:10:21AM +0000, bill4carson wrote:
> Why L_PTE_HUGEPAGE is needed?
> hugetlb subsystem will call pte_page to derive the corresponding page
> struct from a given pte, and pte_pfn is used first to convert pte into
> a page frame number.
Are you sure the pte_pfn() conversion is right? Does it need to be
different from the 4K pfn? I haven't seen any other architecture doing
shifts other than PAGE_SHIFT even for huge pages.
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