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Subject[PATCH 03/11] xen/gntdev: add VM_PFNMAP to vma
Date
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

These pages are from other domains, so don't have any local PFN.
VM_PFNMAP is the closest concept Linux has to this.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
drivers/xen/gntdev.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 45898d4..cf61c7d 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -574,6 +574,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
vma->vm_flags |= VM_RESERVED;
vma->vm_flags |= VM_DONTCOPY;
vma->vm_flags |= VM_DONTEXPAND;
+ vma->vm_flags |= VM_PFNMAP;

vma->vm_private_data = map;
map->vma = vma;
--
1.5.6.5


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