Displaying 9 results from an estimated 9 matches for "vm_dontcopy".
2011 Mar 07
6
[PATCH] xen/gntdev,gntalloc: Remove unneeded VM flags
The only time when granted pages need to be treated specially is when
using Xen''s PTE modification for grant mappings owned by another domain.
Otherwise, the area does not require VM_DONTCOPY and VM_PFNMAP, since it
can be accessed just like any other page of RAM.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
---
drivers/xen/gntalloc.c | 14 ++++++++++++--
drivers/xen/gntdev.c | 16 ++++++++++++++--
2 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/d...
2012 Apr 03
2
[PATCH] xen/gntdev: do not set VM_PFNMAP
...n/gntdev.c b/drivers/xen/gntdev.c
index 99d8151..1ffd03b 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -722,7 +722,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
vma->vm_flags |= VM_RESERVED|VM_DONTEXPAND;
if (use_ptemod)
- vma->vm_flags |= VM_DONTCOPY|VM_PFNMAP;
+ vma->vm_flags |= VM_DONTCOPY;
vma->vm_private_data = map;
--
1.7.2.5
2012 Apr 03
0
[PATCH v2] xen/gntdev: do not set VM_PFNMAP
...n/gntdev.c b/drivers/xen/gntdev.c
index 99d8151..1ffd03b 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -722,7 +722,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
vma->vm_flags |= VM_RESERVED|VM_DONTEXPAND;
if (use_ptemod)
- vma->vm_flags |= VM_DONTCOPY|VM_PFNMAP;
+ vma->vm_flags |= VM_DONTCOPY;
vma->vm_private_data = map;
--
1.7.2.5
2010 Dec 08
2
[PATCH] xen: gntdev: move use of GNTMAP_contains_pte next to the map_op
...quot;: failure!\n");
- return -EINVAL;
+ goto out_unlock;
}
printk(KERN_CONT " %p<-page->%p\n", page->lru.prev, page->lru.next);
list_add_tail(&page->lru, &priv->list);
}
+ spin_unlock(&priv->lock);
- vma->vm_flags |= VM_RESERVED | VM_DONTCOPY;
+ vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP;
+ //vma->vm_flags |= VM_RESERVED | VM_DONTCOPY;
vma->vm_ops = &hypercall_vm_ops;
vma->vm_private_data = priv;
return 0;
+out_unlock:
+ spin_unlock(&priv->lock);
+ return -EINVAL;
}
static int hyper...
2019 Oct 30
0
[PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert
...- pr_warn("Huh? Other mm?\n");
> - goto unlock_out;
> - }
> -
> refcount_inc(&map->users);
>
> vma->vm_ops = &gntdev_vmops;
> @@ -1111,10 +1008,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
> vma->vm_flags |= VM_DONTCOPY;
>
> vma->vm_private_data = map;
> -
> - if (use_ptemod)
> - map->vma = vma;
> -
> if (map->flags) {
> if ((vma->vm_flags & VM_WRITE) &&
> (map->flags & GNTMAP_readonly))
> @@ -1125,8 +1018,28 @@ static int gntdev_mmap(stru...
2019 Oct 28
1
[PATCH v2 09/15] xen/gntdev: use mmu_range_notifier_insert
...p;& priv->mm != vma->vm_mm) {
- pr_warn("Huh? Other mm?\n");
- goto unlock_out;
- }
-
refcount_inc(&map->users);
vma->vm_ops = &gntdev_vmops;
@@ -1111,10 +1008,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
vma->vm_flags |= VM_DONTCOPY;
vma->vm_private_data = map;
-
- if (use_ptemod)
- map->vma = vma;
-
if (map->flags) {
if ((vma->vm_flags & VM_WRITE) &&
(map->flags & GNTMAP_readonly))
@@ -1125,8 +1018,28 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
map...
2019 Oct 28
32
[PATCH v2 00/15] Consolidate the mmu notifier interval_tree and locking
From: Jason Gunthorpe <jgg at mellanox.com>
8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1,
scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where
they only use invalidate_range_start/end and immediately check the
invalidating range against some driver data structure to tell if the
driver is interested. Half of them use an interval_tree, the others
2019 Nov 12
20
[PATCH hmm v3 00/14] Consolidate the mmu notifier interval_tree and locking
From: Jason Gunthorpe <jgg at mellanox.com>
8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1,
scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where
they only use invalidate_range_start/end and immediately check the
invalidating range against some driver data structure to tell if the
driver is interested. Half of them use an interval_tree, the others
2007 Mar 28
2
[PATCH 2/3] User-space grant table device - main driver
A character device for accessing (in user-space) pages that have been
granted by other domains.
Signed-off-by: Derek Murray <Derek.Murray@cl.cam.ac.uk>
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