linux-kernel - [PATCH v3 0/8] huge vmalloc mappings

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Date:   Mon, 10 Aug 2020 12:27:24 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     linux-mm@...ck.org
Cc:     Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Zefan Li <lizefan@...wei.com>
Subject: [PATCH v3 0/8] huge vmalloc mappings

Not tested on x86 or arm64, would appreciate a quick test there so I can
ask Andrew to put it in -mm. Other option is I can disable huge vmallocs
for them for the time being.

Since v2:
- Rebased on vmalloc cleanups, split series into simpler pieces.
- Fixed several compile errors and warnings
- Keep the page array and accounting in small page units because
  struct vm_struct is an interface (this should fix x86 vmap stack debug
  assert). [Thanks Zefan]

Nicholas Piggin (8):
  mm/vmalloc: fix vmalloc_to_page for huge vmap mappings
  mm: apply_to_pte_range warn and fail if a large pte is encountered
  mm/vmalloc: rename vmap_*_range vmap_pages_*_range
  lib/ioremap: rename ioremap_*_range to vmap_*_range
  mm: HUGE_VMAP arch support cleanup
  mm: Move vmap_range from lib/ioremap.c to mm/vmalloc.c
  mm/vmalloc: add vmap_range_noflush variant
  mm/vmalloc: Hugepage vmalloc mappings

 .../admin-guide/kernel-parameters.txt         |   2 +
 arch/arm64/mm/mmu.c                           |  10 +-
 arch/powerpc/mm/book3s64/radix_pgtable.c      |   8 +-
 arch/x86/mm/ioremap.c                         |  10 +-
 include/linux/io.h                            |   9 -
 include/linux/vmalloc.h                       |  13 +
 init/main.c                                   |   1 -
 mm/ioremap.c                                  | 231 +--------
 mm/memory.c                                   |  60 ++-
 mm/vmalloc.c                                  | 442 +++++++++++++++---
 10 files changed, 453 insertions(+), 333 deletions(-)

-- 
2.23.0