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| author | Christoph Hellwig <hch@lst.de> | 2021-09-07 19:56:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-08 11:50:24 -0700 |
| commit | 82a70ce0426dd7c4099516175019dccbd18cebf9 (patch) | |
| tree | 8cb20c4687ac5fb1ed8849bfb803c76891aa64d4 /mm/ioremap.c | |
| parent | 8350229ffceb372621e277d4d36f1ffca6212135 (diff) | |
| download | linux-stable-82a70ce0426dd7c4099516175019dccbd18cebf9.tar.gz linux-stable-82a70ce0426dd7c4099516175019dccbd18cebf9.tar.bz2 linux-stable-82a70ce0426dd7c4099516175019dccbd18cebf9.zip | |
mm: move ioremap_page_range to vmalloc.c
Patch series "small ioremap cleanups".
The first patch moves a little code around the vmalloc/ioremap boundary
following a bigger move by Nick earlier. The second enforces
non-executable mapping on ioremap just like we do for vmap. No driver
currently uses executable mappings anyway, as they should.
This patch (of 2):
This keeps it together with the implementation, and to remove the
vmap_range wrapper.
Link: https://lkml.kernel.org/r/20210824091259.1324527-1-hch@lst.de
Link: https://lkml.kernel.org/r/20210824091259.1324527-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/ioremap.c')
| -rw-r--r-- | mm/ioremap.c | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/mm/ioremap.c b/mm/ioremap.c index 8ee0136f8cb0..5fe598ecd9b7 100644 --- a/mm/ioremap.c +++ b/mm/ioremap.c @@ -8,33 +8,9 @@ */ #include <linux/vmalloc.h> #include <linux/mm.h> -#include <linux/sched.h> #include <linux/io.h> #include <linux/export.h> -#include <asm/cacheflush.h> -#include "pgalloc-track.h" - -#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -static unsigned int __ro_after_init iomap_max_page_shift = BITS_PER_LONG - 1; - -static int __init set_nohugeiomap(char *str) -{ - iomap_max_page_shift = PAGE_SHIFT; - return 0; -} -early_param("nohugeiomap", set_nohugeiomap); -#else /* CONFIG_HAVE_ARCH_HUGE_VMAP */ -static const unsigned int iomap_max_page_shift = PAGE_SHIFT; -#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ - -int ioremap_page_range(unsigned long addr, - unsigned long end, phys_addr_t phys_addr, pgprot_t prot) -{ - return vmap_range(addr, end, phys_addr, prot, iomap_max_page_shift); -} - -#ifdef CONFIG_GENERIC_IOREMAP void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot) { unsigned long offset, vaddr; @@ -71,4 +47,3 @@ void iounmap(volatile void __iomem *addr) vunmap((void *)((unsigned long)addr & PAGE_MASK)); } EXPORT_SYMBOL(iounmap); -#endif /* CONFIG_GENERIC_IOREMAP */ |