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
..
boot	x86: add support for LZO-compressed kernels	2010-01-11 09:34:05 -08:00
configs	tracing: Rename FTRACE_SYSCALLS for tracepoints	2009-08-26 00:17:35 +02:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2009-12-01 15:16:22 +08:00
ia32	x86: get rid of the insane TIF_ABI_PENDING bit	2010-01-29 08:22:01 -08:00
include/asm	Merge remote branch 'linus/master' into x86/bootmem	2010-02-10 16:55:28 -08:00
kernel	x86: Dynamically increase early_res array size	2010-02-10 17:47:18 -08:00
kvm	KVM: PIT: control word is write-only	2010-02-09 19:20:15 +02:00
lguest	lguest: move panic notifier registration to its expected place.	2009-09-23 22:26:44 +09:30
lib	Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent	2009-12-28 09:23:13 +01:00
math-emu
mm	x86: Make early_node_mem get mem > 4 GB if possible	2010-02-10 17:47:18 -08:00
oprofile	oprofile/x86: add Xeon 7500 series support	2010-01-25 15:34:53 +01:00
pci	x86: Change range end to start+size	2010-02-10 17:47:17 -08:00
power	hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events	2009-11-08 15:34:42 +01:00
tools	Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent	2009-12-28 09:23:13 +01:00
vdso	sysctl x86: Remove dead binary sysctl support	2009-11-12 02:05:04 -08:00
video
xen	x86: xen: 64-bit kernel RPL should be 0	2010-01-13 11:23:54 +01:00
Kbuild
Kconfig	x86: Remove "x86 CPU features in debugfs" (CONFIG_X86_CPU_DEBUG)	2010-01-23 18:27:47 -08:00
Kconfig.cpu	Revert "x86: Side-step lguest problem by only building cmpxchg8b_emu for pre-Pentium"	2010-01-05 16:01:35 -08:00
Kconfig.debug	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-11 20:47:30 -08:00
Makefile	Merge branch 'perf/core' into perf/probes	2009-11-17 10:17:47 +01:00
Makefile_32.cpu	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-08 13:38:11 -08:00