[PATCH v2 0/4] huge vmalloc mappings

Nicholas Piggin
2020-04-13T12:59:51Z

We can get a significant win with larger mappings for some of the big
global hashes.

Since RFC, relevant architectures have added p?d_leaf accessors so no
real arch changes required, and I changed it not to allocate huge
mappings for modules and a bunch of other fixes.

Nicholas Piggin (4):
mm/vmalloc: fix vmalloc_to_page for huge vmap mappings
mm: Move ioremap page table mapping function to mm/
mm: HUGE_VMAP arch query functions cleanup
mm/vmalloc: Hugepage vmalloc mappings

arch/arm64/mm/mmu.c | 8 +-
arch/powerpc/mm/book3s64/radix_pgtable.c | 6 +-
arch/x86/mm/ioremap.c | 6 +-
include/linux/io.h | 3 -
include/linux/vmalloc.h | 15 +
lib/ioremap.c | 203 +----------
mm/vmalloc.c | 413 +++++++++++++++++++----
7 files changed, 380 insertions(+), 274 deletions(-)

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2.23.0