On 10/30/2017 4:57 PM, Jason Gunthorpe wrote:
On Sun, Oct 29, 2017 at 11:26:04PM +0200, Yishai Hadas wrote:
@@ -632,6 +632,11 @@ enum mlx5dv_set_ctx_attr_type {
MLX5DV_CTX_ATTR_BUF_ALLOCATORS = 1,
};
+enum {
+ MLX5_MMAP_GET_REGULAR_PAGES_CMD = 0,
+ MLX5_MMAP_GET_NC_PAGES_CMD = 3,
+};
+
These are added to a public header, but I couldn't see where they
would get used by a DV user??
A DV user already had access to the mlx5 mmap command before this series by
using the mlx5dv_get_qp() API:
qp_out->uar_mmap_offset = mqp->bf->uar_mmap_offset;
Okay.
As long as existing users can reasonably be expected to handle this
new value in the uar_mmap_offset output field...
Yes, we expect existing users to work properly.
This output field was exposed by the DV API to enable re-mmap of the UAR
address by a secondary process by using the same 'uar_mmap_offset'
regardless its internal command value.
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