Re: kexec reboot code buffer

From: Eric W. Biederman (ebiederm@xmission.com)
Date: Tue Jan 28 2003 - 02:28:04 EST


William Lee Irwin III <wli@holomorphy.com> writes:

> On Tue, Jan 28, 2003 at 12:04:19AM -0700, Eric W. Biederman wrote:
> > I agree that lowmem for the common case is fine. For kexec on panic,
> > and a some weird cases using high mem is beneficial. I don't have
> > a problem with changing it back to just lowmem for the time being.
>
> Well, there is the bit about dropping the PAE bit from %cr4 too.

Already done, it actually doesn't byte me until the next kernel starts
to execute, as we only set and not clear the PAE bit during bootup.

> Seriously, just plop down the fresh zone type and all will be well.
> It's really incredibly easy.

I will certainly take a look, tracing through that code can get a little
hairy.

Eric
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