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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-04-29 22:58:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:40 -0700 |
| commit | bbc180a5adb05ee8053fab7a0c0bd56c5964240e (patch) | |
| tree | 386f4b3660b5924424a6d36689c3eb3c773588fc /init | |
| parent | 95f0ddf081af3a77433090d9deaf3f76f5648336 (diff) | |
| download | linux-bbc180a5adb05ee8053fab7a0c0bd56c5964240e.tar.gz linux-bbc180a5adb05ee8053fab7a0c0bd56c5964240e.tar.bz2 linux-bbc180a5adb05ee8053fab7a0c0bd56c5964240e.zip | |
mm: HUGE_VMAP arch support cleanup
This changes the awkward approach where architectures provide init
functions to determine which levels they can provide large mappings for,
to one where the arch is queried for each call.
This removes code and indirection, and allows constant-folding of dead
code for unsupported levels.
This also adds a prot argument to the arch query. This is unused
currently but could help with some architectures (e.g., some powerpc
processors can't map uncacheable memory with large pages).
Link: https://lkml.kernel.org/r/20210317062402.533919-7-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64]
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index f498aac26e8c..ae96c79ad2d3 100644 --- a/init/main.c +++ b/init/main.c @@ -837,7 +837,6 @@ static void __init mm_init(void) pgtable_init(); debug_objects_mem_init(); vmalloc_init(); - ioremap_huge_init(); /* Should be run before the first non-init thread is created */ init_espfix_bsp(); /* Should be run after espfix64 is set up. */ |