Messages in this thread | | | Subject | Re: [Bug 4298] swsusp fails to suspend if CONFIG_DEBUG_PAGEALLOC is also enabled | From | Nigel Cunningham <> | Date | Mon, 07 Mar 2005 19:41:48 +1100 |
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Hi,
On Mon, 2005-03-07 at 19:01, Stefan Seyfried wrote: > Andrew Morton wrote: > > Pavel Machek <pavel@ucw.cz> wrote: > > >> Okay, that is because low-level assembly requires PSE (4mb pages for > >> kernel) and DEBUG_PAGEALLOC disables that capability. > >> > >> If you feel like rewriting assembly code to turn off paging (and thus > >> working with PSE), go ahead, but I do not think it is worth the > >> trouble. > >> > >> OTOH we should at least tell people what went wrong, some people seen > >> same problem on VIA cpus... Please apply, > >> > > > > Isn't some Kconfig solution appropriate here? > > Yes, but only for the CONFIG_DEBUG_PAGEALLOC case, it does not solve the > "cpu has no PSE" case for VIA CPUs. So the Kconfig solution is an extra > bonus.
Yeah - separate issues. Suspend2 has worked with CONFIG_DEBUG_PAGEALLOC. You just have to map in all the pages before doing the atomic copies.
Regards,
Nigel -- Nigel Cunningham Software Engineer, Canberra, Australia http://www.cyclades.com Bus: +61 (2) 6291 9554; Hme: +61 (2) 6292 8028; Mob: +61 (417) 100 574
Maintainer of Suspend2 Kernel Patches http://softwaresuspend.berlios.de
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