linux-kernel - [PATCH v2 0/5] KVM: s390: some cleanup and small fixes

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Message-ID: <20250520182639.80013-1-imbrenda@linux.ibm.com>
Date: Tue, 20 May 2025 20:26:34 +0200
From: Claudio Imbrenda <imbrenda@...ux.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: kvm@...r.kernel.org, linux-s390@...r.kernel.org, frankja@...ux.ibm.com,
        borntraeger@...ibm.com, seiden@...ux.ibm.com, nsg@...ux.ibm.com,
        nrb@...ux.ibm.com, david@...hat.com, hca@...ux.ibm.com,
        agordeev@...ux.ibm.com, svens@...ux.ibm.com, gor@...ux.ibm.com,
        schlameuss@...ux.ibm.com
Subject: [PATCH v2 0/5] KVM: s390: some cleanup and small fixes

This series has some cleanups and small fixes in preparation of the
upcoming series that will finally completely move all guest page table
handling into kvm. The cleaups and fixes in this series are good enough
on their own, hence why they are being sent now.

v1->v2
* remove uneeded "gmap.h" include from gaccess.c (thanks Christph)
* use a custom helper instead of u64_replace_bits() (thanks Nina)
* new helper functions in priv.c to increase readability (thanks Nina)
* add lockdep assertion in handle_essa() (thanks Nina)
* gmap_helper_disable_cow_sharing() will not take the mmap lock, and
  must now be called while already holding the mmap lock in write mode

Claudio Imbrenda (5):
  s390: remove unneeded includes
  KVM: s390: remove unneeded srcu lock
  KVM: s390: refactor some functions in priv.c
  KVM: s390: refactor and split some gmap helpers
  KVM: s390: simplify and move pv code

 MAINTAINERS                          |   2 +
 arch/s390/include/asm/gmap_helpers.h |  18 ++
 arch/s390/include/asm/tlb.h          |   1 +
 arch/s390/include/asm/uv.h           |   1 -
 arch/s390/kernel/uv.c                |  12 +-
 arch/s390/kvm/Makefile               |   2 +-
 arch/s390/kvm/diag.c                 |  11 +-
 arch/s390/kvm/gaccess.c              |   3 +-
 arch/s390/kvm/gmap-vsie.c            |   1 -
 arch/s390/kvm/gmap.c                 | 121 -----------
 arch/s390/kvm/gmap.h                 |  39 ----
 arch/s390/kvm/intercept.c            |   9 +-
 arch/s390/kvm/kvm-s390.c             |  10 +-
 arch/s390/kvm/kvm-s390.h             |  57 ++++++
 arch/s390/kvm/priv.c                 | 287 +++++++++++++--------------
 arch/s390/kvm/pv.c                   |  61 +++++-
 arch/s390/kvm/vsie.c                 |  19 +-
 arch/s390/mm/Makefile                |   2 +
 arch/s390/mm/fault.c                 |   1 -
 arch/s390/mm/gmap.c                  |  47 +----
 arch/s390/mm/gmap_helpers.c          | 259 ++++++++++++++++++++++++
 arch/s390/mm/init.c                  |   1 -
 arch/s390/mm/pgalloc.c               |   2 -
 arch/s390/mm/pgtable.c               |   1 -
 24 files changed, 591 insertions(+), 376 deletions(-)
 create mode 100644 arch/s390/include/asm/gmap_helpers.h
 delete mode 100644 arch/s390/kvm/gmap.c
 delete mode 100644 arch/s390/kvm/gmap.h
 create mode 100644 arch/s390/mm/gmap_helpers.c

-- 
2.49.0