RE: [PATCH] SN2 user-MMIO CPU migration

Brent Casavant
2006-01-25T23:09:31Z

On Wed, 25 Jan 2006, Brent Casavant wrote:

> Hmm. I have only scant evidence to go on from the panic output,
> but it looks like "current" (r13) is not equal to the value of "next"
> by the time we get into sn_migrate(). One example run apparently
> has currentà000030079d8000, nextà00003015990000.

Got it! We're context switching. "next" became "current". No
telling what on earth "next's next" was. So after calling
ia64_switch_to(next), I have to refer to "current" in order to
access what was "next" before the call. My brain's all knotted up.

Take 5 following soon.

Brent

--
Brent Casavant All music is folk music. I ain't
bcasavan@sgi.com never heard a horse sing a song.
Silicon Graphics, Inc. -- Louis Armstrong