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m68k: implement flush_icache_user_range

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Rename the current flush_icache_range to flush_icache_user_range as per
commit ae92ef8a44 ("PATCH] flush icache in correct context") there
seems to be an assumption that it operates on user addresses.  Add a
flush_icache_range around it that for now is a no-op.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-25-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2020-06-07 21:42:37 -07:00 committed by Linus Torvalds
parent fca7f8e6fd
commit a1e81f9654
2 changed files with 8 additions and 1 deletions
arch/m68k
include/asm
cacheflush_mm.h
mm
cache.c

2
arch/m68k/include/asm/cacheflush_mm.h
View File

@ -257,6 +257,8 @@ static inline void __flush_page_to_ram(void *vaddr)
extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long addr, int len);
extern void flush_icache_range(unsigned long address, unsigned long endaddr);
extern void flush_icache_user_range(unsigned long address,
unsigned long endaddr);
static inline void copy_to_user_page(struct vm_area_struct *vma,
struct page *page, unsigned long vaddr,

7
arch/m68k/mm/cache.c
View File

@ -73,7 +73,7 @@ static unsigned long virt_to_phys_slow(unsigned long vaddr)
/* Push n pages at kernel virtual address and clear the icache */
/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
void flush_icache_range(unsigned long address, unsigned long endaddr)
void flush_icache_user_range(unsigned long address, unsigned long endaddr)
{
if (CPU_IS_COLDFIRE) {
unsigned long start, end;
@ -104,6 +104,11 @@ void flush_icache_range(unsigned long address, unsigned long endaddr)
: "di" (FLUSH_I));
}
}
void flush_icache_range(unsigned long address, unsigned long endaddr)
{
flush_icache_user_range(address, endaddr);
}
EXPORT_SYMBOL(flush_icache_range);
void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,