[ofa-general] [PATCH RFC] RDMA: New Memory Extensions.

[Roland Dreier]

 > So you want the page size specified in the fast_reg_page_list as
 > opposed to when the page list is bound to the fast_reg mr (via
 > post_send)?

It's kind of the same thing, since the fast_reg_page_list is part of the
send work request... the structures you have at the moment are:

 > +		struct {
 > +			u64				iova_start;
 > +			struct ib_fast_reg_page_list	*page_list;
 > +			int				fbo;
 > +			u32				length;
 > +			int				access_flags;
 > +			struct ib_mr 			*mr;

(side note... move this pointer up with the other pointers, so you don't
end up with a hole in the structure due to alignment... or stick an int
page_size in to fill the hole)

 > +		} fast_reg;

 > +struct ib_fast_reg_page_list {
 > +	struct ib_device 	*device;
 > +	u64			*page_list;
 > +	int			page_list_len;
 > +};

is page_list_len the maximum length of the page_list, or is it filled in
by the consumer?  The driver could figure out the length of the
page_list for any given work request by looking at the MR length and the
page_size I suppose.

 - R.