x86-64, numa: Put pgtable to local node memory

Introduce init_memory_mapping_high(), and use it with 64bit.

It will go with every memory segment above 4g to create page table to the
memory range itself.

before this patch all page tables was on one node.

with this patch, one RED-PEN is killed

debug out for 8 sockets system after patch
[    0.000000] initial memory mapped : 0 - 20000000
[    0.000000] init_memory_mapping: [0x00000000000000-0x0000007f74ffff]
[    0.000000]  0000000000 - 007f600000 page 2M
[    0.000000]  007f600000 - 007f750000 page 4k
[    0.000000] kernel direct mapping tables up to 7f750000 @ [0x7f74c000-0x7f74ffff]
[    0.000000] RAMDISK: 7bc84000 - 7f745000
....
[    0.000000] Adding active range (0, 0x10, 0x95) 0 entries of 3200 used
[    0.000000] Adding active range (0, 0x100, 0x7f750) 1 entries of 3200 used
[    0.000000] Adding active range (0, 0x100000, 0x1080000) 2 entries of 3200 used
[    0.000000] Adding active range (1, 0x1080000, 0x2080000) 3 entries of 3200 used
[    0.000000] Adding active range (2, 0x2080000, 0x3080000) 4 entries of 3200 used
[    0.000000] Adding active range (3, 0x3080000, 0x4080000) 5 entries of 3200 used
[    0.000000] Adding active range (4, 0x4080000, 0x5080000) 6 entries of 3200 used
[    0.000000] Adding active range (5, 0x5080000, 0x6080000) 7 entries of 3200 used
[    0.000000] Adding active range (6, 0x6080000, 0x7080000) 8 entries of 3200 used
[    0.000000] Adding active range (7, 0x7080000, 0x8080000) 9 entries of 3200 used
[    0.000000] init_memory_mapping: [0x00000100000000-0x0000107fffffff]
[    0.000000]  0100000000 - 1080000000 page 2M
[    0.000000] kernel direct mapping tables up to 1080000000 @ [0x107ffbd000-0x107fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x107ffc2000-0x107fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00001080000000-0x0000207fffffff]
[    0.000000]  1080000000 - 2080000000 page 2M
[    0.000000] kernel direct mapping tables up to 2080000000 @ [0x207ff7d000-0x207fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x207ffc0000-0x207fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00002080000000-0x0000307fffffff]
[    0.000000]  2080000000 - 3080000000 page 2M
[    0.000000] kernel direct mapping tables up to 3080000000 @ [0x307ff3d000-0x307fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x307ffc0000-0x307fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00003080000000-0x0000407fffffff]
[    0.000000]  3080000000 - 4080000000 page 2M
[    0.000000] kernel direct mapping tables up to 4080000000 @ [0x407fefd000-0x407fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x407ffc0000-0x407fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00004080000000-0x0000507fffffff]
[    0.000000]  4080000000 - 5080000000 page 2M
[    0.000000] kernel direct mapping tables up to 5080000000 @ [0x507febd000-0x507fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x507ffc0000-0x507fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00005080000000-0x0000607fffffff]
[    0.000000]  5080000000 - 6080000000 page 2M
[    0.000000] kernel direct mapping tables up to 6080000000 @ [0x607fe7d000-0x607fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x607ffc0000-0x607fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00006080000000-0x0000707fffffff]
[    0.000000]  6080000000 - 7080000000 page 2M
[    0.000000] kernel direct mapping tables up to 7080000000 @ [0x707fe3d000-0x707fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x707ffc0000-0x707fffffff]          PGTABLE
[    0.000000] init_memory_mapping: [0x00007080000000-0x0000807fffffff]
[    0.000000]  7080000000 - 8080000000 page 2M
[    0.000000] kernel direct mapping tables up to 8080000000 @ [0x807fdfc000-0x807fffffff]
[    0.000000]     memblock_x86_reserve_range: [0x807ffbf000-0x807fffffff]          PGTABLE
[    0.000000] Initmem setup node 0 [0000000000000000-000000107fffffff]
[    0.000000]   NODE_DATA [0x0000107ffbd000-0x0000107ffc1fff]
[    0.000000] Initmem setup node 1 [0000001080000000-000000207fffffff]
[    0.000000]   NODE_DATA [0x0000207ffbb000-0x0000207ffbffff]
[    0.000000] Initmem setup node 2 [0000002080000000-000000307fffffff]
[    0.000000]   NODE_DATA [0x0000307ffbb000-0x0000307ffbffff]
[    0.000000] Initmem setup node 3 [0000003080000000-000000407fffffff]
[    0.000000]   NODE_DATA [0x0000407ffbb000-0x0000407ffbffff]
[    0.000000] Initmem setup node 4 [0000004080000000-000000507fffffff]
[    0.000000]   NODE_DATA [0x0000507ffbb000-0x0000507ffbffff]
[    0.000000] Initmem setup node 5 [0000005080000000-000000607fffffff]
[    0.000000]   NODE_DATA [0x0000607ffbb000-0x0000607ffbffff]
[    0.000000] Initmem setup node 6 [0000006080000000-000000707fffffff]
[    0.000000]   NODE_DATA [0x0000707ffbb000-0x0000707ffbffff]
[    0.000000] Initmem setup node 7 [0000007080000000-000000807fffffff]
[    0.000000]   NODE_DATA [0x0000807ffba000-0x0000807ffbefff]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D1933D1.9020609@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3def8c9a5dc9..fc0fe743f3a1 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -931,14 +931,6 @@ void __init setup_arch(char **cmdline_p)
         max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
         max_pfn_mapped = max_low_pfn_mapped;
 
-#ifdef CONFIG_X86_64
-        if (max_pfn > max_low_pfn) {
-                max_pfn_mapped = init_memory_mapping(1UL<<32,
-                                                     max_pfn<<PAGE_SHIFT);
-                /* can we preseve max_low_pfn ?*/
-                max_low_pfn = max_pfn;
-        }
-#endif
         memblock.current_limit = get_max_mapped();
 
         /*