Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] x86: Construct 32 bit boot time page tables in native format. | Date | Mon, 28 Jan 2008 21:28:55 +0100 |
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On Monday, 28 of January 2008, H. Peter Anvin wrote: > Jeremy Fitzhardinge wrote: > > H. Peter Anvin wrote: > >> and we already have to have code to synchronize the PGDs on !PAE and > >> the PMDs on Xen (although that was supposedly getting fixed). > > > > No, I don't have any plans there. Xen will continue to require > > non-shared kernel pmd, at least for a 32-bit host. I think the point is > > that nothing that requires an identity mapping will work under Xen > > anyway, so Xen just doesn't care about this case. > > > > Still makes it a special case, not just for this.
In fact swsusp creates its own temporary page tables for restoring the last part of the image. Please have a look at arch/x86/kernel/suspend_*_64.c and the files in arch/x86/power (most importantly suspend.c).
Thanks, Rafael
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