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linux/arch/x86/mm
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Yinghai Lu 3299625036 x86: Fix checking of SRAT when node 0 ram is not from 0 
Found one system that boot from socket1 instead of socket0, SRAT get rejected...

[    0.000000] SRAT: Node 1 PXM 0 0-a0000
[    0.000000] SRAT: Node 1 PXM 0 100000-80000000
[    0.000000] SRAT: Node 1 PXM 0 100000000-2080000000
[    0.000000] SRAT: Node 0 PXM 1 2080000000-4080000000
[    0.000000] SRAT: Node 2 PXM 2 4080000000-6080000000
[    0.000000] SRAT: Node 3 PXM 3 6080000000-8080000000
[    0.000000] SRAT: Node 4 PXM 4 8080000000-a080000000
[    0.000000] SRAT: Node 5 PXM 5 a080000000-c080000000
[    0.000000] SRAT: Node 6 PXM 6 c080000000-e080000000
[    0.000000] SRAT: Node 7 PXM 7 e080000000-10080000000
...
[    0.000000] NUMA: Allocated memnodemap from 500000 - 701040
[    0.000000] NUMA: Using 20 for the hash shift.
[    0.000000] Adding active range (0, 0x2080000, 0x4080000) 0 entries of 3200 used
[    0.000000] Adding active range (1, 0x0, 0x96) 1 entries of 3200 used
[    0.000000] Adding active range (1, 0x100, 0x7f750) 2 entries of 3200 used
[    0.000000] Adding active range (1, 0x100000, 0x2080000) 3 entries of 3200 used
[    0.000000] Adding active range (2, 0x4080000, 0x6080000) 4 entries of 3200 used
[    0.000000] Adding active range (3, 0x6080000, 0x8080000) 5 entries of 3200 used
[    0.000000] Adding active range (4, 0x8080000, 0xa080000) 6 entries of 3200 used
[    0.000000] Adding active range (5, 0xa080000, 0xc080000) 7 entries of 3200 used
[    0.000000] Adding active range (6, 0xc080000, 0xe080000) 8 entries of 3200 used
[    0.000000] Adding active range (7, 0xe080000, 0x10080000) 9 entries of 3200 used
[    0.000000] SRAT: PXMs only cover 917504MB of your 1048566MB e820 RAM. Not used.
[    0.000000] SRAT: SRAT not used.

the early_node_map is not sorted because node0 with non zero start come first.

so try to sort it right away after all regions are registered.

also fixs refression by 8716273c (x86: Export srat physical topology)

-v2: make it more solid to handle cross node case like node0 [0,4g), [8,12g) and node1 [4g, 8g), [12g, 16g)
-v3: update comments.

Reported-and-tested-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B2579D2.3010201@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-12-16 16:43:37 -08:00
..
kmemcheck Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck 2009-09-22 08:07:54 -07:00
dump_pagetables.c x86: remove (null) in /sys kernel_page_tables 2009-04-14 11:50:22 +02:00
extable.c x86, 64-bit: Move K8 B step iret fixup to fault entry asm 2009-10-12 18:29:46 +02:00
fault.c Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-05 15:33:27 -08:00
gup.c Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-20 11:29:32 -07:00
highmem_32.c Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2009-09-14 17:43:43 -07:00
hugetlbpage.c x86: ignore VM_LOCKED when determining if hugetlb-backed page tables can be shared or not 2009-05-29 08:40:03 -07:00
init_32.c x86, cpa: Fix kernel text RO checks in static_protection() 2009-11-02 17:16:35 +01:00
init_64.c x86_64, cpa: Use only text section in set_kernel_text_rw/ro 2009-11-02 17:17:24 +01:00
init.c x86, mm: Report state of NX protections during boot 2009-11-16 13:44:59 -08:00
iomap_32.c x86, pat: Add PAT reserve free to io_mapping* APIs 2009-08-26 15:41:16 -07:00
ioremap.c Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:34:17 -08:00
k8topology_64.c x86: Move find_smp_config() earlier and avoid bootmem usage 2009-11-24 12:10:51 +01:00
kmmio.c Merge commit 'linus/master' into x86/urgent 2009-12-11 10:57:42 -08:00
Makefile x86: split NX setup into separate file to limit unstack-protected code 2009-09-21 13:56:58 -07:00
memtest.c x86: memtest: use pointers of equal type for comparison 2009-06-11 16:26:35 +02:00
mmap.c x86: Increase MIN_GAP to include randomized stack 2009-09-10 17:00:12 -07:00
mmio-mod.c x86: Fix build warning in arch/x86/mm/mmio-mod.c 2009-12-14 08:55:43 +01:00
numa_32.c x86: Export k8 physical topology 2009-10-12 22:56:45 +02:00
numa_64.c x86, numa: Use near(er) online node instead of roundrobin for NUMA 2009-11-23 10:06:24 +01:00
numa.c cpumask: convert node_to_cpumask_map[] to cpumask_var_t 2009-03-13 14:35:31 +01:00
pageattr-test.c
pageattr.c x86, pageattr: Make set_memory_(x|nx) aware of NX support 2009-11-16 13:44:58 -08:00
pat.c Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:34:17 -08:00
pf_in.c
pf_in.h
pgtable_32.c x86/32: no need to use set_pte_present in set_pte_vaddr 2009-03-19 14:04:18 +01:00
pgtable.c x86, 32-bit: Fix double accounting in reserve_top_address() 2009-08-04 16:27:29 +02:00
physaddr.c x86: split __phys_addr out into separate file 2009-09-10 11:48:55 -07:00
physaddr.h x86: split __phys_addr out into separate file 2009-09-10 11:48:55 -07:00
setup_nx.c x86, mm: Report state of NX protections during boot 2009-11-16 13:44:59 -08:00
srat_32.c x86: Fix checking of SRAT when node 0 ram is not from 0 2009-12-16 16:43:37 -08:00
srat_64.c x86: Fix checking of SRAT when node 0 ram is not from 0 2009-12-16 16:43:37 -08:00
testmmiotrace.c testmmiotrace.c: Add and use pr_fmt(fmt) 2009-10-12 08:05:41 +02:00
tlb.c x86: Eliminate redundant/contradicting cache line size config options 2009-11-19 04:58:34 +01:00