Messages in this thread | | | Subject | Re: Fw: [Lhms-devel] Making hotremovable attribute with memory section[0/4] | From | Alan Cox <> | Date | Tue, 17 Aug 2004 01:27:23 +0100 |
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On Maw, 2004-08-17 at 00:35, Dave Hansen wrote: > In any case, the question of the day is, does anyone have any > suggestions on how to create 2 separate pools for pages: one > representing hot-removable pages, and the other pages that may not be > removed?
How do you define the split. There are lots of circumstances where user pages can be pinned for a long (near indefinite) period of time and used for DMA.
Consider - Video capture - AGP Gart - AGP based framebuffer (intel i8/9xx) - O_DIRECT I/O
There are also things like cluster interconnects, sendfile and the like involved here.
Alan
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