From: Dan Malek <dan@embeddededge.com>
To: Jason McMullan <jason.mcmullan@timesys.com>
Cc: PPC_LINUX <linuxppc-embedded@ozlabs.org>
Subject: Re: [PATCH] 2.6.11.7 MPC8xx Swap Band-Aid
Date: Thu, 5 May 2005 09:31:41 -0400 [thread overview]
Message-ID: <736378e38e2e5b0b7266f5c075e20ac1@embeddededge.com> (raw)
In-Reply-To: <1115297124.9050.12.camel@jmcmullan.timesys>
On May 5, 2005, at 8:45 AM, Jason McMullan wrote:
> First off, this patch works.
Well ..... if you invalidate TLBs and flush cache often enough,
you can mask lots of problems :-)
> Secondly, I don't know exactly why. I just found all the band-aids I
> could for MPC8xx swap functionality, applied them, and fixed the places
> where it still bled.
We shouldn't have the 8xx as a special case for the swap flags and
information. We need to take a closer look at this. I guess I'll do
that
as part of fixing up the PTEs for the BDI2000 as well.
> It's more of a dancing bear, than a real fix, but I now have working
> swap (using ATA over Ethernet) on my MPC885 ADS.
IIRC, ATA over Ethernet isn't the same as disk doing DMA due to the
data copies involved.
Thanks.
-- Dan
prev parent reply other threads:[~2005-05-05 13:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 12:45 [PATCH] 2.6.11.7 MPC8xx Swap Band-Aid Jason McMullan
2005-05-05 13:31 ` Dan Malek [this message]
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