From: Samuel Rydh <samuel@ibrium.se>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.linuxppc.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] 2.6 timebase synchronization
Date: Sun, 10 Aug 2003 23:29:42 +0200 [thread overview]
Message-ID: <20030810212942.GB14877@ibrium.se> (raw)
In-Reply-To: <1060508348.13388.20.camel@gaston>
On Sun, Aug 10, 2003 at 11:39:08AM +0200, Benjamin Herrenschmidt wrote:
>
> On Sun, 2003-08-10 at 04:09, Paul Mackerras wrote:
> > Samuel Rydh writes:
> >
> > > Attached is an improved version of the patch.
> >
> > How many SMP machines are there where we don't know how to freeze/thaw
> > the timebase? We know how to do that on the old powersurge powermacs,
> > on CHRP systems and on at least some of the recent core99 powermacs
> > (those that have a timebase-enable property on the cpu device nodes).
> > What machines are left?
>
> We know how to do it on some core99, though we don't actually do it
> yet ;) We use software sync on all core99 for now.
Btw, the freeze/thaw timebase setting that is done on psurge is lost
since the generic timebase calibration mechanism is still invoked
afterwards (and at that time, the timebases are ticking).
/Samuel
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2003-08-10 21:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-08 0:15 [PATCH] 2.6 timebase synchronization Samuel Rydh
2003-08-09 1:13 ` Samuel Rydh
2003-08-09 8:58 ` Benjamin Herrenschmidt
2003-08-09 11:48 ` Samuel Rydh
2003-08-10 2:09 ` Paul Mackerras
2003-08-10 9:39 ` Benjamin Herrenschmidt
2003-08-10 16:22 ` Mark Guertin
2003-08-10 21:29 ` Samuel Rydh [this message]
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