From: Becky Bruce <bec...@kernel.crashing.org>
Currently, it does a cntlzd on the size and then subtracts it from
21.... this doesn't take into account the varying size of a "long".
Just use __ilog instead (and subtract the 10 we have to subtract
to get to the tsize encoding).
Signed-off-by: Becky Bruce <bec...@kernel.crashing.org>
---
arch/powerpc/mm/fsl_booke_mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index f7802c8..54897c0 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -111,7 +111,7 @@ static void settlbcam(int index, unsigned long virt,
phys_addr_t phys,
unsigned int tsize, lz;
asm (PPC_CNTLZL "%0,%1" : "=r" (lz) : "r" (size));
- tsize = 21 - lz;
+ tsize = __ilog2(size) - 10;
#ifdef CONFIG_SMP
if ((flags & _PAGE_NO_CACHE) == 0)
--
1.5.6.5
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