Messages in this thread | | | Date | Wed, 11 Jan 2017 11:03:23 +0100 | From | Borislav Petkov <> | Subject | Re: 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel |
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On Wed, Jan 11, 2017 at 01:51:56AM -0800, Paul E. McKenney wrote: > Yes, you could make RCU expedited grace periods go back to using the > requesting task, and that would allow expedited grace periods to run early > in the boot process. But that causes problems with signals and the like > unless you revert a few other patches. The bugzilla is interesting -- > it looks like ACPI was in some cases doing early-boot grace-period waits > some time back?
I think this and https://bugzilla.suse.com/show_bug.cgi?id=1017783 is an example of a bunch of toshiba schlaptops which cause the issue. So it looks like ACPI is doing something very early on those which tickles the issue to happen.
But this is ACPI - anything can happen!
> I have a limping prototype RCU patch that should avoid this problem. > > If all goes well, I will send it out late tomorrow evening, Pacific Time.
Attach it to the bugzilla too, pls, because the people there trigger the issue.
I have the respective(?) SUSE bug and I can ask people there to run it too.
Thanks.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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