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SubjectRe: [PATCH] CPU hot swap for 2.4.3 + s390 support
On Sun, 6 May 2001, Chris Wedgwood wrote:
> On Sat, May 05, 2001 at 11:19:09PM -0300, Rik van Riel wrote:
> This only leaves two issues, the first is device drivers and the
> second is the question whether we'd want the overhead needed to
> implement the (fairly easy) memory relocation.
> How do you relocate
> -- pages which are mlocked without violating RT contraints?

Fuck RT constraints. Linux doesn't have infinitely small
scheduling latencies, it's easy to copy a page without
increasing the scheduling latencies much.

> -- pages which contain kernel pointers and might be accessed from
> interrupt context?

Block interrupts while copying a kernel page?

Remember that this is an emergency situation, so it's ok
to use "big hammer" solutions.


Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

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