Comment 13 for bug 1860347

Reviewed: https://review.opendev.org/705066
Committed: https://git.openstack.org/cgit/starlingx/integ/commit/?id=7e27429ba3703ef02e21947810c1822f95b6da59
Submitter: Zuul
Branch: r/stx.2.0

commit 7e27429ba3703ef02e21947810c1822f95b6da59
Author: Jim Somerville <email address hidden>
Date: Fri Jan 24 12:36:06 2020 -0500

    Mellanox Driver: Disable use of kernel page pool functionality

    Problem: The out-of-tree Mellanox driver detects the presence
    of page pool support in the new kernel, and thus wants to use it.
    However, page pools are not configured to be on in the new kernel
    by default (CONFIG_PAGE_POOL), and not only that, the config
    option is hidden ie. it is not user selectable. The built-in
    Mellanox driver selects it, but we don't use the built-in driver.
    The out-of-tree driver does compile but not all pieces of it
    will load properly, specifically the mlx5 pieces which rely on
    page pool functionality being enabled in the kernel.

    Solution: Simply disable kernel page pool use in the
    out-of-tree Mellanox driver, making it work the same way as
    it did with the older kernel.

    Change-Id: If7e7155867d539352fcd0ea3acd5a17dd9d9579f
    Closes-Bug: 1860347
    Signed-off-by: Jim Somerville <email address hidden>
    (cherry picked from commit 424ba94a9aa9e64fe1c0d2099b63e7d979b492cd)