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| author | David S. Miller <davem@davemloft.net> | 2014-09-27 11:05:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-05 16:53:40 -0700 |
| commit | bb4e6e85daa52a9f6210fa06a5ec6269598a202b (patch) | |
| tree | 4ffffa2e95e5ad28c35762da8d9d7bcafce57052 /arch/sparc/include/asm/pgtable_64.h | |
| parent | 7c0fa0f24bb76ce3d67be7f737b799846a04570f (diff) | |
| download | blackbird-op-linux-bb4e6e85daa52a9f6210fa06a5ec6269598a202b.tar.gz blackbird-op-linux-bb4e6e85daa52a9f6210fa06a5ec6269598a202b.zip | |
sparc64: Adjust vmalloc region size based upon available virtual address bits.
In order to accomodate embedded per-cpu allocation with large numbers
of cpus and numa nodes, we have to use as much virtual address space
as possible for the vmalloc region. Otherwise we can get things like:
PERCPU: max_distance=0x380001c10000 too large for vmalloc space 0xff00000000
So, once we select a value for PAGE_OFFSET, derive the size of the
vmalloc region based upon that.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Bob Picco <bob.picco@oracle.com>
Diffstat (limited to 'arch/sparc/include/asm/pgtable_64.h')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 0552957f6ddc..c0939228e4b1 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -40,10 +40,7 @@ #define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL) #define HI_OBP_ADDRESS _AC(0x0000000100000000,UL) #define VMALLOC_START _AC(0x0000000100000000,UL) -#define VMALLOC_END _AC(0x0000010000000000,UL) -#define VMEMMAP_BASE _AC(0x0000010000000000,UL) - -#define vmemmap ((struct page *)VMEMMAP_BASE) +#define VMEMMAP_BASE VMALLOC_END /* PMD_SHIFT determines the size of the area a second-level page * table can map @@ -81,6 +78,10 @@ #ifndef __ASSEMBLY__ +extern unsigned long VMALLOC_END; + +#define vmemmap ((struct page *)VMEMMAP_BASE) + #include <linux/sched.h> bool kern_addr_valid(unsigned long addr); |
