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authorAndi Kleen <ak@suse.de>2007-05-02 19:27:12 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:12 +0200
commit0d08e0d3a97cce22ebf80b54785e00d9b94e1add (patch)
tree341ce0f925a6f922118eac2c9a9c9c3e4a345d9b /mm/vmalloc.c
parentbbf30a1650be396b5467f769f4fbee715f16ec36 (diff)
downloadlwn-0d08e0d3a97cce22ebf80b54785e00d9b94e1add.tar.gz
lwn-0d08e0d3a97cce22ebf80b54785e00d9b94e1add.zip
[PATCH] x86-64: Fix vmalloc_32 to really allocate <4GB on 64bit platforms
Ugly ifdef, but should handle all 64bit platforms that have suitable zones. On some like Altix it's probably impossible without IOMMU use to get memory <4GB this way, but they have to live with that. Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'mm/vmalloc.c')
-rw-r--r--mm/vmalloc.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 9eef486da909..cb5aabda7046 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -431,7 +431,7 @@ void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
area->flags |= VM_VPAGES;
} else {
pages = kmalloc_node(array_size,
- (gfp_mask & ~(__GFP_HIGHMEM | __GFP_ZERO)),
+ (gfp_mask & GFP_LEVEL_MASK),
node);
}
area->pages = pages;
@@ -577,6 +577,14 @@ void *vmalloc_exec(unsigned long size)
return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC);
}
+#if defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA32)
+#define GFP_VMALLOC32 GFP_DMA32
+#elif defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA)
+#define GFP_VMALLOC32 GFP_DMA
+#else
+#define GFP_VMALLOC32 GFP_KERNEL
+#endif
+
/**
* vmalloc_32 - allocate virtually contiguous memory (32bit addressable)
* @size: allocation size
@@ -586,7 +594,7 @@ void *vmalloc_exec(unsigned long size)
*/
void *vmalloc_32(unsigned long size)
{
- return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL);
+ return __vmalloc(size, GFP_VMALLOC32, PAGE_KERNEL);
}
EXPORT_SYMBOL(vmalloc_32);
@@ -602,7 +610,7 @@ void *vmalloc_32_user(unsigned long size)
struct vm_struct *area;
void *ret;
- ret = __vmalloc(size, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
+ ret = __vmalloc(size, GFP_VMALLOC32 | __GFP_ZERO, PAGE_KERNEL);
if (ret) {
write_lock(&vmlist_lock);
area = __find_vm_area(ret);