Re: [PATCH] vr41xx: fix problem with vr41xx_cpu_wait

[Atsushi Nemoto <anemo@mba.ocn.ne.jp>]

On Wed, 6 Aug 2008 16:17:10 +0000, Ricardo Mendoza <ricmm@gentoo.org> wrote:
> I see, I hadn't read that thread before. Yoichi's rev of the patch
> should go in but we should put some effort in finding a better route for
> CPUs that are not forcefully aware by hardware of interrupts in their
> wait call.
> 
> Was some work ever done on Ralf's idea in the "WAIT vs. tickless kernel"
> ML thread? Regarding patching the return from exception code to contain
> a check for this particular loop.

Yes.  My last proposal is:

http://www.linux-mips.org/archives/linux-mips/2007-11/msg00123.html

To support vr41's standby instruction in same way, we might have to
synthesise rollback_handle_int, etc. or r4k_wait at runtime...

---
Atsushi Nemoto