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| author | Andi Kleen <ak@suse.de> | 2007-05-02 19:27:12 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:12 +0200 |
| commit | 0d08e0d3a97cce22ebf80b54785e00d9b94e1add (patch) | |
| tree | 341ce0f925a6f922118eac2c9a9c9c3e4a345d9b /mm/vmalloc.c | |
| parent | bbf30a1650be396b5467f769f4fbee715f16ec36 (diff) | |
| download | lwn-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.c | 14 |
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); |