From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 4 Jan 2001 03:48:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 4 Jan 2001 03:48:41 -0500 Received: from smtp4.ihug.co.nz ([203.109.252.5]:4102 "EHLO smtp4.ihug.co.nz") by vger.kernel.org with ESMTP id ; Thu, 4 Jan 2001 03:48:24 -0500 Message-ID: <3A543837.DFF61275@ihug.co.nz> Date: Thu, 04 Jan 2001 21:45:43 +1300 From: david X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.17 i686) X-Accept-Language: en MIME-Version: 1.0 To: Linux Kernel List Subject: big memory maping problim Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org hi i have kernel 2.2.18 i need a dma buffer (dose not have to be linear) so i used vmalloc to get the space then i need to make it non_cache so i found cr3 the got the page entry and got the phys page address also setting bit 4 of the page entry to disable caching and then reloading cr3 when i had done all the pages to reset the tlb's this worked fine but now i need to shear the mem with a user program so in my driver mmap function i got vm->start and current ->tss->cr3 this give me to page entree witch i then set to the phys addr of the above pages this seam's to work fine is their any thing else i need to do ? remap_pages_range did not work on this mem but dose work on other address spaces ? Thank You David Rundle - 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/