[PATCH RFC V2 0/6] rxe_map_mr_sg() fix cleanup and refactor

[Li Zhijian]

I don't collect the Reviewed-by to the patch1-2 this time, since i
think we can make it better.

Patch1-2: Fix kernel panic[1] and benifit to make srp work again.
          Almost nothing change from V1.
Patch3-5: cleanups # newly add
Patch6: make RXE support PAGE_SIZE aligned mr # newly add, but not fully tested

My bad arm64 mechine offten hangs when doing blktests even though i use the
default siw driver.

- nvme and ULPs(rtrs, iser) always registers 4K mr still don't supported yet.

[1] https://lore.kernel.org/all/CAHj4cs9XRqE25jyVw9rj9YugffLn5+f=1znaBEnu1usLOciD+g@xxxxxxxxxxxxxx/T/

Li Zhijian (6):
  RDMA/rxe: RDMA/rxe: don't allow registering !PAGE_SIZE mr
  RDMA/rxe: set RXE_PAGE_SIZE_CAP to PAGE_SIZE
  RDMA/rxe: remove unused rxe_mr.page_shift
  RDMA/rxe: Use PAGE_SIZE and PAGE_SHIFT to extract address from
    page_list
  RDMA/rxe: cleanup rxe_mr.{page_size,page_shift}
  RDMA/rxe: Support PAGE_SIZE aligned MR

 drivers/infiniband/sw/rxe/rxe_mr.c    | 80 ++++++++++++++++-----------
 drivers/infiniband/sw/rxe/rxe_param.h |  2 +-
 drivers/infiniband/sw/rxe/rxe_verbs.h |  9 ---
 3 files changed, 48 insertions(+), 43 deletions(-)

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2.41.0