From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Date: Wed, 19 Jan 2005 17:56:59 +0000 Subject: Re: pgprot_writecombine & shub 1.x Message-Id: <200501190956.59510.jbarnes@sgi.com> List-Id: References: <200501111200.02504.jbarnes@sgi.com> In-Reply-To: <200501111200.02504.jbarnes@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Wednesday, January 19, 2005 9:53 am, David Mosberger wrote: > I'm still not clear which case you're concerned about: mapping I/O > memory with WC or mapping real memory with WC. For the latter, I > think we may need an API to allocate memory that can be mapped WC (if > possible at all). Oh, I thought I said that in the first message, I'm talking about I/O memory here. In any event though, we shouldn't be mapping anything with the WC attribute that the EFI memory map doesn't allow. And yes, we probably do need a special allocator for mapping regular memory with WC or UC attributes to avoid mapping the same region with different attributes. Thanks, Jesse