> Sigh .... I am only using 2 GB on a 4GB capable processor (actually
> a 64 GB capable processor). Looks like a patch is needed. Who is
> maintaining vmalloc.c at present so I know who to submit a patch
> to?
Actually you are using a 64Gb capable processor that is only capable of
sanely addressing 4Gb at a time, total across both user and kernel space
and takes a hefty hit whenever you switch which 4Gb you are peering at.
If you want to make sensible use of even 4Gb user/4Gb kernel you need to
take a page table reload at syscall time and deal with quite messy handling
for copy to/from user.
[If someone from Intel disagrees please do so publically - I'd love to have
someone prove the limit can be dealt with 8)]
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This archive was generated by hypermail 2b29 : Sat Feb 23 2002 - 21:00:28 EST