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authorPaul Mackerras <paulus@samba.org>2005-11-08 11:14:20 +1100
committerPaul Mackerras <paulus@samba.org>2005-11-08 11:14:20 +1100
commit24bfb00123e82a2e70bd115277d922438813515b (patch)
tree27328b8a5718e16d64e2d101f4b7ddcad5930aed /arch/powerpc/mm
parentc6135234550ed89a6fd0e8cb229633967e41d649 (diff)
parent3f00d3e8fb963968a922d821a9a53b503b687e81 (diff)
downloadop-kernel-dev-24bfb00123e82a2e70bd115277d922438813515b.zip
op-kernel-dev-24bfb00123e82a2e70bd115277d922438813515b.tar.gz
Merge ../linux-2.6
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/hash_utils_64.c6
-rw-r--r--arch/powerpc/mm/hugetlbpage.c6
-rw-r--r--arch/powerpc/mm/ppc_mmu_32.c4
-rw-r--r--arch/powerpc/mm/slb_low.S13
4 files changed, 21 insertions, 8 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 37273f5..3d83c3b 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -328,12 +328,14 @@ static void __init htab_init_page_sizes(void)
*/
if (mmu_psize_defs[MMU_PAGE_16M].shift)
mmu_huge_psize = MMU_PAGE_16M;
+ /* With 4k/4level pagetables, we can't (for now) cope with a
+ * huge page size < PMD_SIZE */
else if (mmu_psize_defs[MMU_PAGE_1M].shift)
mmu_huge_psize = MMU_PAGE_1M;
/* Calculate HPAGE_SHIFT and sanity check it */
- if (mmu_psize_defs[mmu_huge_psize].shift > 16 &&
- mmu_psize_defs[mmu_huge_psize].shift < 28)
+ if (mmu_psize_defs[mmu_huge_psize].shift > MIN_HUGEPTE_SHIFT &&
+ mmu_psize_defs[mmu_huge_psize].shift < SID_SHIFT)
HPAGE_SHIFT = mmu_psize_defs[mmu_huge_psize].shift;
else
HPAGE_SHIFT = 0; /* No huge pages dude ! */
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 0073a04..426c269 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -212,6 +212,12 @@ static int prepare_high_area_for_htlb(struct mm_struct *mm, unsigned long area)
BUG_ON(area >= NUM_HIGH_AREAS);
+ /* Hack, so that each addresses is controlled by exactly one
+ * of the high or low area bitmaps, the first high area starts
+ * at 4GB, not 0 */
+ if (start == 0)
+ start = 0x100000000UL;
+
/* Check no VMAs are in the region */
vma = find_vma(mm, start);
if (vma && (vma->vm_start < end))
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index d137abd..ed7fcfe 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -188,9 +188,9 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
if (Hash == 0)
return;
- pmd = pmd_offset(pgd_offset(vma->vm_mm, address), address);
+ pmd = pmd_offset(pgd_offset(mm, ea), ea);
if (!pmd_none(*pmd))
- add_hash_page(vma->vm_mm->context, address, pmd_val(*pmd));
+ add_hash_page(mm->context, ea, pmd_val(*pmd));
}
/*
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 3e18241..950ffc5 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -80,12 +80,17 @@ _GLOBAL(slb_miss_kernel_load_virtual)
BEGIN_FTR_SECTION
b 1f
END_FTR_SECTION_IFCLR(CPU_FTR_16M_PAGE)
+ cmpldi r10,16
+
+ lhz r9,PACALOWHTLBAREAS(r13)
+ mr r11,r10
+ blt 5f
+
lhz r9,PACAHIGHHTLBAREAS(r13)
srdi r11,r10,(HTLB_AREA_SHIFT-SID_SHIFT)
- srd r9,r9,r11
- lhz r11,PACALOWHTLBAREAS(r13)
- srd r11,r11,r10
- or. r9,r9,r11
+
+5: srd r9,r9,r11
+ andi. r9,r9,1
beq 1f
_GLOBAL(slb_miss_user_load_huge)
li r11,0
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