From: Becky Bruce <bec...@kernel.crashing.org>
This patch does 2 things: It corrects the code that determines the
size to write into MAS1 for the PPC_MM_SLICES case (this originally
came from David Gibson and I had incorrectly altered it), and it
changes the methodolody used to calculate the size for !PPC_MM_SLICES
to work for 64-bit as well as 32-bit.
Signed-off-by: Becky Bruce <bec...@kernel.crashing.org>
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
arch/powerpc/mm/hugetlbpage-book3e.c | 15 ++++++---------
1 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/hugetlbpage-book3e.c
b/arch/powerpc/mm/hugetlbpage-book3e.c
index 343ad0b..4d6d849 100644
--- a/arch/powerpc/mm/hugetlbpage-book3e.c
+++ b/arch/powerpc/mm/hugetlbpage-book3e.c
@@ -45,23 +45,20 @@ void book3e_hugetlb_preload(struct mm_struct *mm, unsigned
long ea, pte_t pte)
unsigned long flags;
#ifdef CONFIG_PPC_FSL_BOOK3E
- int index, lz, ncams;
- struct vm_area_struct *vma;
+ int index, ncams;
#endif
if (unlikely(is_kernel_addr(ea)))
return;
#ifdef CONFIG_PPC_MM_SLICES
- psize = mmu_get_tsize(get_slice_psize(mm, ea));
- tsize = mmu_get_psize(psize);
+ psize = get_slice_psize(mm, ea);
+ tsize = mmu_get_tsize(psize);
shift = mmu_psize_defs[psize].shift;
#else
- vma = find_vma(mm, ea);
- psize = vma_mmu_pagesize(vma); /* returns actual size in bytes */
- asm (PPC_CNTLZL "%0,%1" : "=r" (lz) : "r" (psize));
- shift = 31 - lz;
- tsize = 21 - lz;
+ psize = vma_mmu_pagesize(find_vma(mm, ea));
+ shift = __ilog2(psize);
+ tsize = shift - 10;
#endif
/*
--
1.5.6.5
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
