Date: Mon, 23 Nov 2009 02:05:11 +0100 From: Joerg Sonnenberger <joerg@britannica.bec.de> To: svn-src-all@freebsd.org Subject: Re: svn commit: r199670 - head/sys/dev/bge Message-ID: <20091123010511.GA14572@britannica.bec.de> In-Reply-To: <200911222050.nAMKoRYh029141@svn.freebsd.org> References: <200911222050.nAMKoRYh029141@svn.freebsd.org>
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On Sun, Nov 22, 2009 at 08:50:27PM +0000, Pyun YongHyeon wrote: > Log: > Fix two long standing bugs on bge(4). Most pre BCM5755 controllers > have a DMA bug when buffer address crosses a multiple of the 4GB > boundary(e.g. 4GB, 8GB, 12GB etc). Does this only affect transfers that *cross* a 4GB boundary or does it also affect transfers that *end* at a 4GB boundary? E.g. if the mbuf cluster starts at 0xffffff00 with size 0x100 -- will the DMA engine stall happen or not? Joerg
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