netdev - Re: [PATCH] bnx2x: Accessing un-mapped page

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Message-Id: <20080903.143828.192637455.davem@davemloft.net>
Date:	Wed, 03 Sep 2008 14:38:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eilong@...adcom.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] bnx2x: Accessing un-mapped page

From: "Eilon Greenstein" <eilong@...adcom.com>
Date: Wed, 3 Sep 2008 11:20:34 -0700

> We just root-caused a critical issue that causes fatal error on PPC with 64KB page.
>
> The problem was due to a feature that allows the chip to align the
> Ethernet payload to 64 bytes - those possible extra 64 bytes were
> only added to the SKB allocation and not to the PCI mapping size. In
> this case there is no need to differentiate between the SKB buffer
> size and the PCI mapping size since the chip might actually use the
> extra 64 bytes. The problem becomes fatal if the last 64 bytes of
> the packets are crossing 4KB boundary and in this case the last page
> was not mapped.
>
> Please consider applying - I'm attaching a patch for this issue
> which also includes an update to the version number.

Patch applied, thanks Eilon.
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