[PATCH] MIPS: Avoid destructive invalidation on partial L2 cachelines

Kevin Cernekee
2009-09-19T02:21:45Z

This extends commit a8ca8b64e3fdfec17679cba0ca5ce6e3ffed092d to cover
the board cache code.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
---
arch/mips/mm/sc-mips.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c
index b55c2d1..5ab5fa8 100644
--- a/arch/mips/mm/sc-mips.c
+++ b/arch/mips/mm/sc-mips.c
@@ -32,6 +32,11 @@ static void mips_sc_wback_inv(unsigned long addr, unsigned long size)
*/
static void mips_sc_inv(unsigned long addr, unsigned long size)
{
+ unsigned long lsize = cpu_scache_line_size();
+ unsigned long almask = ~(lsize - 1);
+
+ cache_op(Hit_Writeback_Inv_SD, addr & almask);
+ cache_op(Hit_Writeback_Inv_SD, (addr + size - 1) & almask);
blast_inv_scache_range(addr, addr + size);
}

--
1.6.3.1