Hello,
On 2013-11-06 20:48, Ricardo Ribalda Delgado wrote:
Memory exported via remap_pfn_range cannot be remapped via
get_user_pages.
Other videobuf2 methods (like the dma-contig) supports io memory.
This patch adds support for this kind of memory.
Signed-off-by: Ricardo Ribalda Delgado
Hello Mathias
Memory managing is definately not my topic. I have done the same as in
vb2-dmacontig, and it has worked on my driver (out of tree).
I think that if there is something wrong it will also be wrong on the
dmacontig part, and much more drivers would be affected, so please
also take a
Hello,
On 2013-11-11 12:36, Matthias Wächter wrote:
@@ -180,7 +186,26 @@ static void *vb2_dma_sg_get_userptr(void
*alloc_ctx, unsigned long vaddr,
if (!buf-pages)
return NULL;
- num_pages_from_user = get_user_pages(current, current-mm,
+ buf-vma =
Hello Marek
Could you review the patch? Is there something that needs to be fixed?
Thanks!
On Mon, Nov 25, 2013 at 4:41 PM, Marek Szyprowski
m.szyprow...@samsung.com wrote:
Hello,
On 2013-11-11 12:36, Matthias Wächter wrote:
@@ -180,7 +186,26 @@ static void *vb2_dma_sg_get_userptr(void
@@ -180,7 +186,26 @@ static void *vb2_dma_sg_get_userptr(void
*alloc_ctx, unsigned long vaddr,
if (!buf-pages)
return NULL;
- num_pages_from_user = get_user_pages(current, current-mm,
+ buf-vma = find_vma(current-mm, vaddr);
+ if (!buf-vma) {
+
Memory exported via remap_pfn_range cannot be remapped via
get_user_pages.
Other videobuf2 methods (like the dma-contig) supports io memory.
This patch adds support for this kind of memory.
Signed-off-by: Ricardo Ribalda Delgado ricardo.riba...@gmail.com
---
