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| author | Zoltan Menyhart <Zoltan.Menyhart@bull.net> | 2008-04-11 15:21:35 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-04-11 15:21:35 -0700 |
| commit | 98075d245a5bc4aeebc2e9f16fa8b089a5c200ac (patch) | |
| tree | 5d248fa7ec872548e43ed2acb864d701adc65f42 /include | |
| parent | c19b2930df0621500913c005c06978bd8933110b (diff) | |
| download | kernel_samsung_aries-98075d245a5bc4aeebc2e9f16fa8b089a5c200ac.zip kernel_samsung_aries-98075d245a5bc4aeebc2e9f16fa8b089a5c200ac.tar.gz kernel_samsung_aries-98075d245a5bc4aeebc2e9f16fa8b089a5c200ac.tar.bz2 | |
[IA64] Fix NUMA configuration issue
There is a NUMA memory configuration issue in 2.6.24:
A 2-node machine of ours has got the following memory layout:
Node 0: 0 - 2 Gbytes
Node 0: 4 - 8 Gbytes
Node 1: 8 - 16 Gbytes
Node 0: 16 - 18 Gbytes
"efi_memmap_init()" merges the three last ranges into one.
"register_active_ranges()" is called as follows:
efi_memmap_walk(register_active_ranges, NULL);
i.e. once for the 4 - 18 Gbytes range. It picks up the node
number from the start address, and registers all the memory for
the node #0.
"register_active_ranges()" should be called as follows to
make sure there is no merged address range at its entry:
efi_memmap_walk(filter_memory, register_active_ranges);
"filter_memory()" is similar to "filter_rsvd_memory()",
but the reserved memory ranges are not filtered out.
Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ia64/meminit.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h index f93308f..7245a57 100644 --- a/include/asm-ia64/meminit.h +++ b/include/asm-ia64/meminit.h @@ -35,6 +35,7 @@ extern void find_memory (void); extern void reserve_memory (void); extern void find_initrd (void); extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg); +extern int filter_memory (unsigned long start, unsigned long end, void *arg); extern unsigned long efi_memmap_init(unsigned long *s, unsigned long *e); extern int find_max_min_low_pfn (unsigned long , unsigned long, void *); @@ -56,7 +57,7 @@ extern int reserve_elfcorehdr(unsigned long *start, unsigned long *end); #define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */ -extern int register_active_ranges(u64 start, u64 end, void *arg); +extern int register_active_ranges(u64 start, u64 len, int nid); #ifdef CONFIG_VIRTUAL_MEM_MAP # define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */ |