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nommu: use flush_icache_user_range in brk and mmap 

These obviously operate on user addresses.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-29-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2020-06-07 21:42:49 -07:00 committed by Linus Torvalds
parent 79ef1e1fff
commit a75a2df68f
1 changed files with 2 additions and 2 deletions
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4
mm/nommu.c
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@ -433,7 +433,7 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
/*
* Ok, looks good - let it rip.
*/
flush_icache_range(mm->brk, brk);
flush_icache_user_range(mm->brk, brk);
return mm->brk = brk;
}
@ -1277,7 +1277,7 @@ share:
/* we flush the region from the icache only when the first executable
* mapping of it is made */
if (vma->vm_flags & VM_EXEC && !region->vm_icache_flushed) {
flush_icache_range(region->vm_start, region->vm_end);
flush_icache_user_range(region->vm_start, region->vm_end);
region->vm_icache_flushed = true;
}