From: Pantelis Antoniou <panto@intracom•gr>
To: Marcelo Tosatti <marcelo.tosatti@cyclades•com>
Cc: linux-ppc-embedded <linuxppc-embedded@ozlabs•org>
Subject: Re: [PATCH] 8xx: fix usage of pinned 8Mbyte TLB entries
Date: Mon, 09 May 2005 09:09:51 +0300 [thread overview]
Message-ID: <427EFEAF.6030903@intracom.gr> (raw)
In-Reply-To: <20050507140527.GC16996@logos.cnet>
Marcelo Tosatti wrote:
>>NO. Just leave that code alone. I don't understand why you think
>>doing this will have any effect on the system operation. If you are
>>able to run a system without creating these tables, then the pinned
>>TLBs must be working. If pinned TLBs weren't working, the kernel
>>would crash.
>
>
> I just booted a kernel with 4kb PTE mappings at KERNELBASE and
> the pinned TLB was not trashed.
>
> So, I was talking nonsense. :)
>
> The only problem are DMA users who dont use dma_alloc_coherent API.
>
>
>
Perhaps I'm jumping in too late, but in my 8xx trees all my drivers
use the correct API. So this will not be a problem after we fix the
drivers :)
Regards
Pantelis
next prev parent reply other threads:[~2005-05-09 6:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 17:20 [PATCH] 8xx: fix usage of pinned 8Mbyte TLB entries Marcelo Tosatti
2005-05-06 13:04 ` Jason McMullan
2005-05-06 11:39 ` Marcelo Tosatti
2005-05-06 16:43 ` Dan Malek
2005-05-06 13:38 ` Marcelo Tosatti
2005-05-06 22:49 ` Dan Malek
2005-05-06 20:03 ` Marcelo Tosatti
2005-05-07 3:09 ` Dan Malek
2005-05-06 23:05 ` Marcelo Tosatti
2005-05-07 4:39 ` Dan Malek
2005-05-07 5:16 ` Dan Malek
2005-05-07 13:16 ` Marcelo Tosatti
2005-05-07 20:02 ` Dan Malek
2005-05-07 15:47 ` Marcelo Tosatti
2005-05-07 14:05 ` Marcelo Tosatti
2005-05-09 6:09 ` Pantelis Antoniou [this message]
2005-05-07 14:59 ` Wolfgang Denk
2005-05-07 5:27 ` Dan Malek
2005-05-07 5:55 ` Dan Malek
2005-05-06 23:10 ` Dan Malek
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