From: Chester Lin clin@suse.com
commit 1d31999cf04c21709f72ceb17e65b54a401330da upstream.
adjust_lowmem_bounds() checks every memblocks in order to find the boundary between lowmem and highmem. However some memblocks could be marked as NOMAP so they are not used by kernel, which should be skipped while calculating the boundary.
Signed-off-by: Chester Lin clin@suse.com Reviewed-by: Mike Rapoport rppt@linux.ibm.com Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Lee Jones lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/mm/mmu.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1195,6 +1195,9 @@ void __init adjust_lowmem_bounds(void) phys_addr_t block_start = reg->base; phys_addr_t block_end = reg->base + reg->size;
+ if (memblock_is_nomap(reg)) + continue; + if (reg->base < vmalloc_limit) { if (block_end > lowmem_limit) /*