linux-kernel - [PATCH 00/13] Clean up pmd_get

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Message-ID: <20221022111403.531902164@infradead.org>
Date:   Sat, 22 Oct 2022 13:14:03 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     x86@...nel.org, willy@...radead.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        linux-mm@...ck.org, aarcange@...hat.com,
        kirill.shutemov@...ux.intel.com, jroedel@...e.de, ubizjak@...il.com
Subject: [PATCH 00/13] Clean up pmd_get_atomic() and i386-PAE

Hi,

At long *long* last a respin of the patches that clean up pmd_get_atomic() and
i386-PAE. I'd nearly forgotten why I did this, but the old posting gave clue
that patch #7 was the whole purpose of me doing these patches.

Having carried these patches for at least 2 years, they recently hit a rebase
bump against the mg-lru patches, which is what prompted this repost.

Linus' comment about try_cmpxchg64() (and Uros before him) made me redo those
patches (see patch #10) which resulted in pxx_xchg64(). This in turn led to
killing off set_64bit().

The robot doesn't hate on these patches and they boot in kvm (because who still
has i386 hardware).

Patches also available at:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/mm.pae

---
 arch/mips/Kconfig                           |   2 +-
 arch/sh/Kconfig                             |   2 +-
 arch/sh/include/asm/pgtable-3level.h        |  10 +-
 arch/um/include/asm/pgtable-3level.h        |   8 --
 arch/x86/Kconfig                            |   2 +-
 arch/x86/include/asm/cmpxchg_32.h           |  28 -----
 arch/x86/include/asm/cmpxchg_64.h           |   5 -
 arch/x86/include/asm/pgtable-3level.h       | 171 ++++++----------------------
 arch/x86/include/asm/pgtable-3level_types.h |   7 ++
 arch/x86/include/asm/pgtable_64_types.h     |   1 +
 arch/x86/include/asm/pgtable_types.h        |   4 +-
 drivers/iommu/intel/irq_remapping.c         |  10 +-
 include/linux/pgtable.h                     |  71 +++++++-----
 kernel/events/core.c                        |   2 +-
 mm/Kconfig                                  |   2 +-
 mm/gup.c                                    |   2 +-
 mm/hmm.c                                    |   3 +-
 mm/khugepaged.c                             |   2 +-
 mm/mapping_dirty_helpers.c                  |   2 +-
 mm/mprotect.c                               |   2 +-
 mm/userfaultfd.c                            |   2 +-
 mm/vmscan.c                                 |   5 +-
 22 files changed, 110 insertions(+), 233 deletions(-)