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Commit e540e835 authored by Wang Sheng-Hui's avatar Wang Sheng-Hui Committed by Chris Metcalf
Browse files

tile: cleanup the comment in init_pgprot 



In tile vmlinux, the rodata area start after the _sdata.
The rodata area is included between [_sdata, __end_rodata),
and is handled at an earlier point.
The page walk starts at __end_rodata, not _sdata.

Signed-off-by: default avatarWang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: default avatarChris Metcalf <cmetcalf@tilera.com>
parent 3af1ea5a

arch/tile/mm/init.c

+3 −3
Original line number Diff line number Diff line
@@ -273,9 +273,9 @@ static pgprot_t __init init_pgprot(ulong address) 
	/*

	 * Otherwise we just hand out consecutive cpus.  To avoid

	 * requiring this function to hold state, we just walk forward from

	 * _sdata by PAGE_SIZE, skipping the readonly and init data, to reach

	 * the requested address, while walking cpu home around kdata_mask.

	 * This is typically no more than a dozen or so iterations.

	 * __end_rodata by PAGE_SIZE, skipping the readonly and init data, to

	 * reach the requested address, while walking cpu home around

	 * kdata_mask. This is typically no more than a dozen or so iterations.

	 */

	page = (((ulong)__end_rodata) + PAGE_SIZE - 1) & PAGE_MASK;

	BUG_ON(address < page || address >= (ulong)_end);