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authorPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
committerPaul Mackerras <paulus@samba.org>2007-05-08 13:37:51 +1000
commit02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1 (patch)
tree04ef573cd4de095c500c9fc3477f4278c0b36300 /arch/powerpc/mm
parent7487a2245b8841c77ba9db406cf99a483b9334e9 (diff)
parent5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff)
downloadblackbird-op-linux-02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1.tar.gz
blackbird-op-linux-02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1.zip
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/hugetlbpage.c24
-rw-r--r--arch/powerpc/mm/init_64.c3
2 files changed, 23 insertions, 4 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 8508f973d9cc..1f07f70ac89f 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -566,6 +566,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
if (len > TASK_SIZE)
return -ENOMEM;
+ /* handle fixed mapping: prevent overlap with huge pages */
+ if (flags & MAP_FIXED) {
+ if (is_hugepage_only_range(mm, addr, len))
+ return -EINVAL;
+ return addr;
+ }
+
if (addr) {
addr = PAGE_ALIGN(addr);
vma = find_vma(mm, addr);
@@ -641,6 +648,13 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
if (len > TASK_SIZE)
return -ENOMEM;
+ /* handle fixed mapping: prevent overlap with huge pages */
+ if (flags & MAP_FIXED) {
+ if (is_hugepage_only_range(mm, addr, len))
+ return -EINVAL;
+ return addr;
+ }
+
/* dont allow allocations above current base */
if (mm->free_area_cache > base)
mm->free_area_cache = base;
@@ -823,6 +837,13 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
/* Paranoia, caller should have dealt with this */
BUG_ON((addr + len) < addr);
+ /* Handle MAP_FIXED */
+ if (flags & MAP_FIXED) {
+ if (prepare_hugepage_range(addr, len, pgoff))
+ return -EINVAL;
+ return addr;
+ }
+
if (test_thread_flag(TIF_32BIT)) {
curareas = current->mm->context.low_htlb_areas;
@@ -1057,8 +1078,7 @@ static int __init hugetlbpage_init(void)
huge_pgtable_cache = kmem_cache_create("hugepte_cache",
HUGEPTE_TABLE_SIZE,
HUGEPTE_TABLE_SIZE,
- SLAB_HWCACHE_ALIGN |
- SLAB_MUST_HWCACHE_ALIGN,
+ 0,
zero_ctor, NULL);
if (! huge_pgtable_cache)
panic("hugetlbpage_init(): could not create hugepte cache\n");
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index d12a87ec5ae9..4416d5140c53 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -183,8 +183,7 @@ void pgtable_cache_init(void)
"for size: %08x...\n", name, i, size);
pgtable_cache[i] = kmem_cache_create(name,
size, size,
- SLAB_HWCACHE_ALIGN |
- SLAB_MUST_HWCACHE_ALIGN,
+ 0,
zero_ctor,
NULL);
if (! pgtable_cache[i])
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