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From: Conor McLoughlin <cml3227@eircom.net>
To: linuxppc-embedded <linuxppc-embedded@ozlabs.org>
Subject: Re: Does kmalloc on MPC82xx work correctly with GFP_DMA?
Date: Tue, 19 Oct 2004 16:26:27 +0100	[thread overview]
Message-ID: <41753223.2030202@eircom.net> (raw)
In-Reply-To: <5925F5E8-21D9-11D9-A47E-003065F9B7DC@embeddededge.com>

Thanks to everyone who replied. I appreciate your time to help
educate me.

> It works because the 82xx is cache coherent.  The MMU mapping
> is irrelevant.  
That is the missing piece of the puzzle. I had worked with the 860
before and this was an issue. It hadn't occurred to me that the 82xx
was different.

> There is no bug here.  Just because people don't
> understand how something works doesn't mean there is a bug
> present.  
The reason I asked the question in the first place was because I didn't
understand how it could work.  I now understand it and can rest easier.

Thanks,
Conor

  reply	other threads:[~2004-10-19 15:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-18  4:01 SCC UART hang Jeff Angielski
2004-10-18  9:30 ` Does kmalloc on MPC82xx work correctly with GFP_DMA? Conor McLoughlin
2004-10-18 15:31   ` Dan Malek
2004-10-19  8:36     ` Conor McLoughlin
2004-10-19 14:15       ` Dan Malek
2004-10-19 15:26         ` Conor McLoughlin [this message]
2004-10-19 14:31     ` Matt Porter
2004-10-19 14:27   ` Matt Porter

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