On Thu, 2010-07-29 at 13:41 -0700, Jason Gunthorpe wrote:
On Thu, Jul 29, 2010 at 03:29:37PM -0500, Tom Tucker wrote:
Also, I'd like to see a strong defence of this new user space API
particularly:
1) Why can't this be done with the existing ibv_reg_mr, like huge
pages are.
You would need to modify ib_umem_get() to check for the VM_PFNMAP
flag and build the struct ib_umem similar to the proposed
ib_iomem_get(). However, the page reference counting/sharing issue
would need to be solved. I think there are kernel level callbacks
for this that could be used.
But in
On Thu, 2010-07-29 at 15:57 -0700, Jason Gunthorpe wrote:
You would need to modify ib_umem_get() to check for the VM_PFNMAP
flag and build the struct ib_umem similar to the proposed
ib_iomem_get(). However, the page reference counting/sharing issue
would need to be solved. I think there
On 7/29/10 5:57 PM, Jason Gunthorpe wrote:
You would need to modify ib_umem_get() to check for the VM_PFNMAP
flag and build the struct ib_umem similar to the proposed
ib_iomem_get(). However, the page reference counting/sharing issue
would need to be solved. I think there are kernel level
