| To: | Hauke Mehrtens <hauke@hauke-m.de> |
|---|---|
| Subject: | Re: [PATCH] MIPS: Bcm47xx: Fix 128MB RAM support |
| From: | Ralf Baechle <ralf@linux-mips.org> |
| Date: | Mon, 22 Feb 2010 21:36:07 +0100 |
| Cc: | linux-mips@linux-mips.org |
| In-reply-to: | <4B82E827.8030005@hauke-m.de> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <1266691880-372-1-git-send-email-hauke@hauke-m.de> <20100222191440.GA12818@linux-mips.org> <4B82E827.8030005@hauke-m.de> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.5.20 (2009-08-17) |
On Mon, Feb 22, 2010 at 09:25:11PM +0100, Hauke Mehrtens wrote: > > Is this a hardware issue prefetching issue? The kernel should not try > > CPU prefetch instructions at all on non-coherent CPUs such as the > > BCM47xx. > > This is a hardware issue on the bcm47xx when 128MB ram is present. This > workaround is out of broadcom's kernel sources and is included in > OpenWRT for some months. Without this patch the kernel does not even > print out anything and with this patch it is working. Thanks! I was asking to ensure this isn't a workaround for an already solved kernel software issue. Patch applied, Ralf |
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