linux-kernel - [GIT PULL] core/mm changes for v5.2: Unify TLB flushing across architectures

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Message-ID: <20190506065746.GA105888@gmail.com>
Date:   Mon, 6 May 2019 08:57:46 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>
Subject: [GIT PULL] core/mm changes for v5.2: Unify TLB flushing across
 architectures

Linus,

Please pull the latest core-mm-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-mm-for-linus

   # HEAD: f6c6010a07734103a31faa0cc977641b358c45b0 mm/resource: Use resource_overlaps() to simplify region_intersects()

This tree contains the generic mmu_gather feature from Peter Zijlstra, 
which is an all-arch unification of TLB flushing APIs, via the following 
(broad) steps:

 - enhance the <asm-generic/tlb.h> APIs to cover more arch details

 - convert most TLB flushing arch implementations to the generic 
   <asm-generic/tlb.h> APIs.

 - remove leftovers of per arch implementations

After this series every single architecture makes use of the unified TLB 
flushing APIs.

 Thanks,

	Ingo

------------------>
Martin Schwidefsky (2):
      asm-generic/tlb: Introduce CONFIG_HAVE_MMU_GATHER_NO_GATHER=y
      s390/tlb: Convert to generic mmu_gather

Peter Zijlstra (17):
      asm-generic/tlb: Provide a comment
      asm-generic/tlb, arch: Provide CONFIG_HAVE_MMU_GATHER_PAGE_SIZE
      asm-generic/tlb, arch: Provide generic VIPT cache flush
      asm-generic/tlb, arch: Provide generic tlb_flush() based on flush_tlb_range()
      asm-generic/tlb: Provide generic tlb_flush() based on flush_tlb_mm()
      asm-generic/tlb, ia64: Conditionally provide tlb_migrate_finish()
      asm-generic/tlb, arch: Invert CONFIG_HAVE_RCU_TABLE_INVALIDATE
      arm/tlb: Convert to generic mmu_gather
      ia64/tlb: Convert to generic mmu_gather
      sh/tlb: Convert SH to generic mmu_gather
      um/tlb: Convert to generic mmu_gather
      arch/tlb: Clean up simple architectures
      asm-generic/tlb: Remove arch_tlb*_mmu()
      asm-generic/tlb: Remove CONFIG_HAVE_GENERIC_MMU_GATHER
      asm-generic/tlb: Remove tlb_flush_mmu_free()
      asm-generic/tlb: Remove tlb_table_flush()
      ia64/tlb: Eradicate tlb_migrate_finish() callback

Wei Yang (1):
      mm/resource: Use resource_overlaps() to simplify region_intersects()


 Documentation/core-api/cachetlb.rst |  10 --
 arch/Kconfig                        |   8 +-
 arch/alpha/Kconfig                  |   1 +
 arch/alpha/include/asm/tlb.h        |   6 -
 arch/arc/include/asm/tlb.h          |  32 ----
 arch/arm/include/asm/tlb.h          | 255 ++-----------------------------
 arch/arm64/Kconfig                  |   1 -
 arch/arm64/include/asm/tlb.h        |   1 +
 arch/c6x/Kconfig                    |   1 +
 arch/c6x/include/asm/tlb.h          |   2 -
 arch/h8300/include/asm/tlb.h        |   2 -
 arch/hexagon/include/asm/tlb.h      |  12 --
 arch/ia64/include/asm/machvec.h     |  13 --
 arch/ia64/include/asm/machvec_sn2.h |   2 -
 arch/ia64/include/asm/tlb.h         | 259 +-------------------------------
 arch/ia64/include/asm/tlbflush.h    |  25 ++++
 arch/ia64/mm/tlb.c                  |  23 ++-
 arch/ia64/sn/kernel/sn2/sn2_smp.c   |   7 -
 arch/m68k/Kconfig                   |   1 +
 arch/m68k/include/asm/tlb.h         |  14 --
 arch/microblaze/Kconfig             |   1 +
 arch/microblaze/include/asm/tlb.h   |   9 --
 arch/mips/include/asm/tlb.h         |  17 ---
 arch/nds32/include/asm/tlb.h        |  16 --
 arch/nds32/include/asm/tlbflush.h   |   1 -
 arch/nios2/Kconfig                  |   1 +
 arch/nios2/include/asm/tlb.h        |  14 +-
 arch/openrisc/Kconfig               |   1 +
 arch/openrisc/include/asm/tlb.h     |   8 +-
 arch/parisc/include/asm/tlb.h       |  18 ---
 arch/powerpc/Kconfig                |   2 +
 arch/powerpc/include/asm/tlb.h      |  18 +--
 arch/riscv/include/asm/tlb.h        |   1 +
 arch/s390/Kconfig                   |   2 +
 arch/s390/include/asm/tlb.h         | 130 +++++-----------
 arch/s390/mm/pgalloc.c              |  63 +-------
 arch/sh/include/asm/pgalloc.h       |   9 ++
 arch/sh/include/asm/tlb.h           | 132 +----------------
 arch/sparc/Kconfig                  |   1 +
 arch/sparc/include/asm/tlb_32.h     |  18 ---
 arch/um/include/asm/tlb.h           | 158 +-------------------
 arch/unicore32/Kconfig              |   1 +
 arch/unicore32/include/asm/tlb.h    |   7 +-
 arch/x86/Kconfig                    |   1 -
 arch/x86/include/asm/tlb.h          |   1 +
 arch/xtensa/include/asm/tlb.h       |  26 ----
 include/asm-generic/tlb.h           | 288 ++++++++++++++++++++++++++++++++----
 kernel/iomem.c                      |   4 +-
 kernel/resource.c                   |  11 +-
 kernel/sched/core.c                 |   1 -
 mm/huge_memory.c                    |   4 +-
 mm/hugetlb.c                        |   2 +-
 mm/madvise.c                        |   2 +-
 mm/memory.c                         |   6 +-
 mm/mmu_gather.c                     | 129 ++++++++--------
 55 files changed, 482 insertions(+), 1296 deletions(-)