From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 24 Jan 2001 14:30:10 -0600 From: Timur Tabi In-Reply-To: <3A6F22D7.3000709@valinux.com> References: <20010124174824Z129401-18594+948@vger.kernel.org> Subject: Re: Page Attribute Table (PAT) support? Message-Id: <20010124203012Z129444-18594+1042@vger.kernel.org> Content-Type: Sender: owner-linux-mm@kvack.org Return-Path: To: Linux Kernel Mailing list Cc: Linux MM mailing list List-ID: ** Reply to message from Jeff Hartmann on Wed, 24 Jan 2001 11:45:43 -0700 > I'm actually writing support for the PAT as we speak. I already have > working code for PAT setup. Just having a parameter for ioremap is not > enough, unfortunately. According to the Intel Architecture Software > Developer's Manual we have to remove all mappings of the page that are > cached. For our specific purposes, that's not important. We already flush the cache before we create uncached regions (via ioremap_nocache). I understand that as a general Linux feature, you can't ignore cache incoherency, but I don't think it's a hard requirement. -- Timur Tabi - ttabi@interactivesi.com Interactive Silicon - http://www.interactivesi.com When replying to a mailing-list message, please direct the reply to the mailing list only. Don't send another copy to me. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/