RDMA/bnxt_re: Fix FRMR issue with single page MR allocation

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When the FRMR is allocated with single page, driver is attempting to
create a level 0 HWQ and not allocating any page because the nopte field
is set. This causes the crash during post_send as the pbl is not
populated.

To avoid this crash, check for the nopte bit during HWQ creation with
single page and create a level 1 page table and populate the pbl address
correctly.

Link: https://lore.kernel.org/r/1631709163-2287-9-git-send-email-selvin.xavier@broadcom.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Selvin Xavier 2021-09-15 05:32:39 -07:00 • committed by Jason Gunthorpe

parent 598d16fa1b

commit 2b4ccce6ca

1 changed files with 3 additions and 2 deletions

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5

drivers/infiniband/hw/bnxt_re/qplib_res.c

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