Messages in this thread |  | | From | Jakub Jelinek <> | | Subject | Re: Linux and physical memory | | Date | Tue, 19 Jan 1999 10:07:07 +0100 (CET) |
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> > From: Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz> > Date: Tue, 19 Jan 1999 08:37:54 +0100 (CET) > > Also, if you add PG_highmem, I bet current page_alloc will suck > badly (even the way how is PG_dma done now is very unefficient). > > No, it's actually pretty simple. The difference is that PG_dma "must" > get a PG_dma page. Whereas PG_highmem says such a page is "OK" if > that is what you happen to find.
Yep, but I guess you'd like to get a PG_highmem page if you can handle it, so that for other allocations there are still enough lowmems. So yes, it could work with some effort, but the page_alloc changes would be handy even for that.
Cheers, Jakub ___________________________________________________________________ Jakub Jelinek | jj@sunsite.mff.cuni.cz | http://sunsite.mff.cuni.cz Administrator of SunSITE Czech Republic, MFF, Charles University ___________________________________________________________________ UltraLinux | http://ultra.linux.cz/ | http://ultra.penguin.cz/ Linux version 2.2.0-pre7 on a sparc64 machine (3958.37 BogoMips) ___________________________________________________________________
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