From: Dan Malek <dan@embeddededge.com>
To: Prashant Alange <prashant.alange@gmail.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: How to disable dcache on MPC82xx platform
Date: Tue, 9 Aug 2005 10:37:11 -0400 [thread overview]
Message-ID: <5c9191bc3e15d90c966735662c28fa5e@embeddededge.com> (raw)
In-Reply-To: <6d145b42050808193058ee05b4@mail.gmail.com>
On Aug 8, 2005, at 10:30 PM, Prashant Alange wrote:
> I am using alloc_bootmem_page() function to allocate memory required
> in my custom ethernet driver.
Why? Just use the normal Linux memory allocators.
> So I am thinking this could be because of cache since this
> driver is working fine on non-os platform. I want to disable the
> dcache for this memory region.
This is a fully cache coherent processor, there is no need to
disable caching, nor is there any easy way to do this in the
current Linux implementation. This would require a custom
kernel, and you couldn't take advantage of the general
performance gain using BATs.
Thanks.
-- Dan
next prev parent reply other threads:[~2005-08-09 14:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-09 2:30 How to disable dcache on MPC82xx platform Prashant Alange
2005-08-09 14:37 ` Dan Malek [this message]
2005-08-09 14:57 ` Prashant Alange
2005-08-09 16:37 ` Dan Malek
2005-08-09 21:50 ` Prashant Alange
2005-08-09 22:28 ` Dan Malek
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