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tile: cleanup the comment in init_pgprot

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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: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Wang Sheng-Hui 2014-05-07 15:28:12 +08:00 committed by Chris Metcalf
parent 3af1ea5a2e
commit e540e835f8
1 changed files with 3 additions and 3 deletions
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6
arch/tile/mm/init.c
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@ -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);