Messages in this thread | | | Date | Mon, 16 Mar 2009 13:26:38 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [crash] Re: Latest brk patchset |
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Jeremy Fitzhardinge wrote: > Yinghai Lu wrote: >>> -INIT_MAP_SIZE = (PAGE_TABLE_SIZE + ALLOCATOR_SLOP) * PAGE_SIZE_asm >>> -RESERVE_BRK(pagetables, INIT_MAP_SIZE) >>> +/* Enough space to fit pagetables for the low memory linear map */ >>> +MAPPING_BEYOND_END = (PAGE_TABLE_SIZE(1 << (32 - PAGE_SHIFT)) * >>> PAGE_SIZE) >>> >> >> that is for 4g? >> > > Yes, I suppose it only needs to be 1G. But it doesn't make much > difference in practice. >
A tighter bound would probably be nice, if nothing else because tighter bounds tend to catch more bugs.
-hpa
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