Messages in this thread | | | Date | Thu, 17 Jan 2002 12:14:13 +0000 (GMT) | From | Hugh Dickins <> | Subject | Re: pte-highmem-5 |
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On Thu, 17 Jan 2002, Christoph Rohland wrote: > On Wed, 16 Jan 2002, Andrea Arcangeli wrote: > > They were running out of pagetables, mapping 1G per-task (shm for > > example) will overflow the lowmem zone with PAE with some houndred > > tasks in the system. They were pointing the finger at the VM but the > > VM was just doing the very right thing to do. > > This lets me think about putting the swap vector of shmem into highmem > also. These can get big on highend servers and exactly these servers > tend to use a lot of shared mem.
Yes, good idea.
But people should realize that moving page tables and other such structures into not-always-mapped highmem will make them harder to access with kernel debuggers - I think those will want some changes.
Hugh
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