netdev - [PATCH v2 net-next 0/6] Remove uses of kmap

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Date:   Wed, 23 Nov 2022 12:52:13 -0800
From:   Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
To:     netdev@...r.kernel.org
Cc:     Ira Weiny <ira.weiny@...el.com>,
        "Fabio M . De Francesco" <fmdefrancesco@...il.com>,
        Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
Subject: [PATCH v2 net-next 0/6] Remove uses of kmap_atomic()

kmap_atomic() is being deprecated. This little series replaces the last
few uses of kmap_atomic() in the networking subsystem.

This series triggered a suggestion [1] that perhaps the Sun Cassini,
LDOM Virtual Switch Driver and the LDOM virtual network drivers should be
removed completely. I plan to do this in a follow up patchset. For
completeness, this series still includes kmap_atomic() conversions that
apply to the above referenced drivers. If for some reason we choose to not
remove these drivers, at least they won't be using kmap_atomic() anymore.

Also, the following maintainer entries for the Chelsio driver seem to be
defunct:

  Vinay Kumar Yadav <vinay.yadav@...lsio.com>
  Rohit Maheshwari <rohitm@...lsio.com>

I can submit a follow up patch to remove these entries, but thought
maybe the folks over at Chelsio would want to look into this first.

Changes v1 -> v2:
  Use memcpy_from_page() in patches 2/6 and 4/6
  Add new patch for the thunderbolt driver
  Update commit messages and cover letter

[1] https://lore.kernel.org/netdev/99629223-ac1b-0f82-50b8-ea307b3b0197@intel.com/T/#m3da3759652a48f958ab852fa5499009b43ff8fdd

Anirudh Venkataramanan (6):
  ch_ktls: Use memcpy_from_page() instead of k[un]map_atomic()
  sfc: Use kmap_local_page() instead of kmap_atomic()
  cassini: Use page_address() instead of kmap_atomic()
  cassini: Use memcpy_from_page() instead of k[un]map_atomic()
  sunvnet: Use kmap_local_page() instead of kmap_atomic()
  net: thunderbolt: Use kmap_local_page() instead of kmap_atomic()

 .../chelsio/inline_crypto/ch_ktls/chcr_ktls.c | 26 +++++-----
 drivers/net/ethernet/sfc/tx.c                 |  4 +-
 drivers/net/ethernet/sun/cassini.c            | 48 ++++++-------------
 drivers/net/ethernet/sun/sunvnet_common.c     |  4 +-
 drivers/net/thunderbolt.c                     |  8 ++--
 5 files changed, 35 insertions(+), 55 deletions(-)

base-commit: e80bd08fd75a644e2337fb535c1afdb6417357ff
-- 
2.37.2