From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Date: Sun, 18 May 2003 14:21:30 +0000 Subject: [Linux-ia64] Re: [patch] support 64 bit pci_alloc_consistent Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Sun, May 18, 2003 at 09:17:48AM -0500, James Bottomley wrote: > (it uses 32 bit addr and 32 bit len descriptors, but reduces len to 24 > bits to steal the extra byte for 7 bits extra addressing). However, it > is forced to request the full 64 bit address mask---I've never worked > out what will happen to it on a machine with more than 512GB memory. Uh??? right now even in 2.4 arbitrary bitmasks are supported for non-coherent memory.