Messages in this thread |  | | Date | Tue, 5 Dec 2000 17:07:19 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: That horrible hack from hell called A20 |
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On Wed, 6 Dec 2000, Kai Germaschewski wrote:
> > On Tue, 5 Dec 2000, H. Peter Anvin wrote: > > > If you have had A20M# problems with any kernel -- recent or not -- > > *please* try this patch, against 2.4.0-test12-pre5: > > Just a datapoint: This patch doesn't fix the problem here (Sony > PCG-Z600NE). Still the spontaneous reboot exactly the moment I expect to > get my console back from resumeing.
Actually, I bet I know what's up.
Want to bet $5 USD that suspend/resume saves the keyboard A20 state, but does NOT save the fast-A20 gate information?
So anything that enables A20 with only the fast A20 gate will find that A20 is disabled again on resume.
Which would make Linux _really_ unhappy, needless to say. Instant death in the form of a triple fault (all of the Linux kernel code is in the 1-2MB area, which would be invisible), resulting in an instant reboot.
Peter, we definitely need to do the keyboard A20, even if fast-A20 works fine.
Linus
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