Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760052AbZCMRBy (ORCPT ); Fri, 13 Mar 2009 13:01:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759174AbZCMRAy (ORCPT ); Fri, 13 Mar 2009 13:00:54 -0400 Received: from gw.goop.org ([64.81.55.164]:57400 "EHLO abulafia.goop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758808AbZCMRAx (ORCPT ); Fri, 13 Mar 2009 13:00:53 -0400 From: Jeremy Fitzhardinge To: "H. Peter Anvin" Cc: the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel , David Airlie , Jeremy Fitzhardinge Subject: [PATCH 08/27] x86/pci: make sure _PAGE_IOMAP it set on pci mappings Date: Fri, 13 Mar 2009 09:59:53 -0700 Message-Id: <1236963612-14287-9-git-send-email-jeremy@goop.org> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1236963612-14287-1-git-send-email-jeremy@goop.org> References: <1236963612-14287-1-git-send-email-jeremy@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1050 Lines: 32 From: Jeremy Fitzhardinge When mapping pci space via /sys or /proc, make sure we're really doing a hardware mapping by setting _PAGE_IOMAP. Signed-off-by: Jeremy Fitzhardinge --- arch/x86/pci/i386.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index 5ead808..e233e58 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -296,6 +296,9 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, return -EINVAL; prot = pgprot_val(vma->vm_page_prot); + + prot |= _PAGE_IOMAP; /* creating a mapping for IO */ + if (pat_enabled && write_combine) prot |= _PAGE_CACHE_WC; else if (pat_enabled || boot_cpu_data.x86 > 3) -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/