Messages in this thread | | | Subject | Re: PCI PM: Restore standard config registers of all devices early | From | Benjamin Herrenschmidt <> | Date | Tue, 03 Feb 2009 09:48:47 +1100 |
| |
On Mon, 2009-02-02 at 14:05 -0800, Linus Torvalds wrote: > Well, I don't think anybody wants to (or necessarily has the ability) > touch ACPI internals. > Somebody has a rough idea of what underlying kernel support ACPI uses ? I know from discussions with Len that it's mostly mutexes... timers too ?
It might end up being trivial to make it safe to call early with interrupts off with the trick you mentioned, since it's really just the same as boot as you mentioned.. ie, it's actually safe to take mutexes etc... since we -know- no other CPU is running and we aren't scheduling etc...
Ben.
| |