Yinghai Lu cef625eef8 x86: Make early_node_mem get mem > 4 GB if possible ... So we could put pgdata for the node high, and later sparse vmmap will get the section nr that need. With this patch will make <4 GB ram not use a sparse vmmap. before this patch, will get, before swiotlb try get bootmem [ 0.000000] nid=1 start=0 end=2080000 aligned=1 [ 0.000000] free [10 - 96] [ 0.000000] free [b12 - 1000] [ 0.000000] free [359f - 38a3] [ 0.000000] free [38b5 - 3a00] [ 0.000000] free [41e01 - 42000] [ 0.000000] free [73dde - 73e00] [ 0.000000] free [73fdd - 74000] [ 0.000000] free [741dd - 74200] [ 0.000000] free [743dd - 74400] [ 0.000000] free [745dd - 74600] [ 0.000000] free [747dd - 74800] [ 0.000000] free [749dd - 74a00] [ 0.000000] free [74bdd - 74c00] [ 0.000000] free [74ddd - 74e00] [ 0.000000] free [74fdd - 75000] [ 0.000000] free [751dd - 75200] [ 0.000000] free [753dd - 75400] [ 0.000000] free [755dd - 75600] [ 0.000000] free [757dd - 75800] [ 0.000000] free [759dd - 75a00] [ 0.000000] free [75bdd - 7bf5f] [ 0.000000] free [7f730 - 7f750] [ 0.000000] free [100000 - 2080000] [ 0.000000] total free 1f87170 [ 93.301474] Placing 64MB software IO TLB between ffff880075bdd000 - ffff880079bdd000 [ 93.311814] software IO TLB at phys 0x75bdd000 - 0x79bdd000 with this patch will get: before swiotlb try get bootmem [ 0.000000] nid=1 start=0 end=2080000 aligned=1 [ 0.000000] free [a - 96] [ 0.000000] free [702 - 1000] [ 0.000000] free [359f - 3600] [ 0.000000] free [37de - 3800] [ 0.000000] free [39dd - 3a00] [ 0.000000] free [3bdd - 3c00] [ 0.000000] free [3ddd - 3e00] [ 0.000000] free [3fdd - 4000] [ 0.000000] free [41dd - 4200] [ 0.000000] free [43dd - 4400] [ 0.000000] free [45dd - 4600] [ 0.000000] free [47dd - 4800] [ 0.000000] free [49dd - 4a00] [ 0.000000] free [4bdd - 4c00] [ 0.000000] free [4ddd - 4e00] [ 0.000000] free [4fdd - 5000] [ 0.000000] free [51dd - 5200] [ 0.000000] free [53dd - 5400] [ 0.000000] free [55dd - 7bf5f] [ 0.000000] free [7f730 - 7f750] [ 0.000000] free [100428 - 100600] [ 0.000000] free [13ea01 - 13ec00] [ 0.000000] free [170800 - 2080000] [ 0.000000] total free 1f87170 [ 92.689485] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 92.699799] Placing 64MB software IO TLB between ffff8800055dd000 - ffff8800095dd000 [ 92.710916] software IO TLB at phys 0x55dd000 - 0x95dd000 so will get enough space below 4G, aka pfn 0x100000 Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-15-git-send-email-yinghai@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2010-02-10 17:47:18 -08:00
..
kmemcheck	x86, kmemcheck: Use KERN_WARNING for error reporting	2009-12-28 10:28:35 +01:00
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: Call early_res_to_bootmem one time	2010-02-10 17:47:18 -08:00
init_64.c	x86: Call early_res_to_bootmem one time	2010-02-10 17:47:18 -08:00
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 remote branch 'linus/master' into x86/bootmem	2010-02-10 16:55:28 -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	hw-breakpoints, perf: Fix broken mmiotrace due to dr6 by reference change	2010-01-17 08:01:44 +01:00
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: Make early_node_mem get mem > 4 GB if possible	2010-02-10 17:47:18 -08:00
numa.c	cpumask: convert node_to_cpumask_map[] to cpumask_var_t	2009-03-13 14:35:31 +01:00
pageattr-test.c	x86: make sure the CPA test code's use of _PAGE_UNUSED1 is obvious	2008-09-05 17:09:57 +02:00
pageattr.c	x86, pageattr: Make set_memory_(x|nx) aware of NX support	2009-11-16 13:44:58 -08:00
pat.c	vfs: Implement proper O_SYNC semantics	2009-12-10 15:02:50 +01:00
pf_in.c	x86: fix mmiotrace 8-bit register decoding	2008-10-14 10:33:50 +02:00
pf_in.h	x86 mmiotrace: move files into arch/x86/mm/.	2008-05-24 11:25:37 +02:00
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: Set hotpluggable nodes in nodes_possible_map	2010-01-23 06:21:57 +01:00
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