From: Rik van Riel <riel@redhat.com>

Use generic_access_phys for ptrace and /proc/pid/mem access to PCI device
memory on x86.  This makes it possible to debug the X server.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Benjamin Herrensmidt <benh@kernel.crashing.org>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/x86/pci/i386.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN arch/x86/pci/i386.c~use-generic_access_phys-for-pci-mmap-on-x86 arch/x86/pci/i386.c
--- a/arch/x86/pci/i386.c~use-generic_access_phys-for-pci-mmap-on-x86
+++ a/arch/x86/pci/i386.c
@@ -280,6 +280,7 @@ static void pci_track_mmap_page_range(st
 static struct vm_operations_struct pci_mmap_ops = {
 	.open  = pci_track_mmap_page_range,
 	.close = pci_unmap_page_range,
+	.access = generic_access_phys,
 };
 
 int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
_