Messages in this thread | | | Date | Fri, 22 Feb 2008 08:50:04 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [Suspend-devel] 2.6.25-rc2 System no longer powers off aftersuspend-to-disk. Screen becomes green. |
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On Fri, 22 Feb 2008, Ingo Molnar wrote: > > btw., why isnt there an in-kernel whitelist, with perhaps a dynamic, > convenient /debug/s2r/whitelist append-API for distros (and testers) to > add more entries to the whitelist/blacklist? (for cases where the kernel > whitelist has not caught up yet) Which would eventually converge to > Utopia: s2ram that just works out of box.
The big problem with that is - the people who know about the devices are usually not kernel people - the workarounds that the whitelist requires is quite often not a kernel workaround.
In other words, the most common workarounds for the s2ram whitelist is usually to do things like running vbetool in user-level to do VGA register save/restore (VBE_POST and VGE_SAVE). Sure, the kernel could do that with usermodehelper etc, but s2ram also has those things as command line flags etc, so...
Linus
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