Jeremy Maitin-Shepard wrote:
Nick Piggin <[email protected]> writes:
This is the Morton method, isn't it? :) I remember it sounding like a
very good idea when he brought it up, but I can't remember the details
of why it was rejected or what the problems were.
Perhaps he did bring it up before I did. Please forward me a link to
the thread or other reference if you can find it, as I'd be interested
in reading it.
Sent in the next mail.
I suspect that freeing memory on the fly for the new kernel
would be non-trivial (but possible), however simply having a reserve
RAM region for the new kernel would be fine for a first step.
Freeing memory on the fly should be extremely easy for the kernel (this
is precisely what it does when it needs to satisfy an allocation). Note
that the memory allocated need not be contiguous.
Yes, I have a rough idea about how page reclaim works. But I just
mean it would not be trivial to load the new kernel into physically
discontiguous memory. Possible of course, but I don't think kexec or
the setup code could quite cope ATM.
--
SUSE Labs, Novell Inc.
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