Yinghai Lu 51b361b400 x86-64, NUMA: Fix numa_emulation code with node0 without RAM ... On one system that does not have RAM on node0. When numa_emulation is compiled in, and 1. boot system without numa=fake... 2. or boot system with numa=fake=128 to make emulation fail will get: [ 0.092026] ------------[ cut here ]------------ [ 0.096005] kernel BUG at arch/x86/mm/numa_emulation.c:439! [ 0.096005] invalid opcode: 0000 [#1] SMP [ 0.096005] last sysfs file: [ 0.096005] CPU 0 [ 0.096005] Modules linked in: [ 0.096005] [ 0.096005] Pid: 0, comm: swapper Not tainted 2.6.38-rc6-tip-yh-03869-gcb0491d-dirty #684 Sun Microsystems Sun Fire X4240/Sun Fire X4240 [ 0.096005] RIP: 0010:[<ffffffff81cdc65b>] [<ffffffff81cdc65b>] numa_add_cpu+0x56/0xcf [ 0.096005] RSP: 0000:ffffffff82437ed8 EFLAGS: 00010246 ... [ 0.096005] Call Trace: [ 0.096005] [<ffffffff81cd7931>] identify_cpu+0x2d7/0x2df [ 0.096005] [<ffffffff827e54fa>] identify_boot_cpu+0x10/0x30 [ 0.096005] [<ffffffff827e5704>] check_bugs+0x9/0x2d [ 0.096005] [<ffffffff827dceda>] start_kernel+0x3d7/0x3f1 [ 0.096005] [<ffffffff827dc2cc>] x86_64_start_reservations+0x9c/0xa0 [ 0.096005] [<ffffffff827dc4ad>] x86_64_start_kernel+0x1dd/0x1e8 [ 0.096005] Code: 74 06 48 8d 04 90 eb 0f 48 c7 c0 30 d9 00 00 48 03 04 d5 90 0f 60 82 8b 00 83 f8 ff 74 0d 0f a3 05 8b 7e 92 00 19 d2 85 d2 75 02 <0f> 0b 48 98 be 00 01 00 00 48 c7 c7 e0 44 60 82 44 8b 2c 85 e0 [ 0.096005] RIP [<ffffffff81cdc65b>] numa_add_cpu+0x56/0xcf [ 0.096005] RSP <ffffffff82437ed8> [ 0.096026] ---[ end trace a7919e7f17c0a725 ]--- We need to use early_cpu_to_node() directly, because numa_cpu_node() will return node0 that is not onlined. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>		2011-03-04 14:49:28 +01:00
..
boot	x86: support XZ-compressed kernel	2011-01-13 08:03:25 -08:00
configs	defconfig reduction	2010-08-14 22:26:53 +02:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2011-01-13 10:25:58 -08:00
ia32	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
include/asm	x86-64, NUMA: Revert NUMA affine page table allocation	2011-03-04 10:26:36 +01:00
kernel	x86-64, NUMA: Revert NUMA affine page table allocation	2011-03-04 10:26:36 +01:00
kvm	KVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index	2011-02-09 18:31:36 +02:00
lguest	LGUEST_GUEST: fix unmet direct dependencies (VIRTUALIZATION && VIRTIO)	2011-01-20 21:37:30 +10:30
lib	x86: udelay: Use this_cpu_read to avoid address calculation	2011-01-04 06:08:55 +01:00
math-emu
mm	x86-64, NUMA: Fix numa_emulation code with node0 without RAM	2011-03-04 14:49:28 +01:00
oprofile	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-11 11:02:13 -08:00
pci	x86: Adjust section placement in AMD northbridge related code	2011-02-10 13:32:52 +01:00
platform	x86: OLPC: convert olpc-xo1 driver from pci device to platform device	2011-01-14 12:38:15 +01:00
power	x86, tsc, sched: Recompute cyc2ns_offset's during resume from sleep states	2010-08-20 14:59:02 +02:00
tools
vdso	x86, gcc-4.6: Use gcc -m options when building vdso	2010-12-13 16:08:37 -08:00
video
xen	x86: Rename e820_table_* to pgt_buf_*	2011-02-24 14:52:18 +01:00
.gitignore
Kbuild	x86: Add platform directory	2010-10-27 14:30:01 +02:00
Kconfig	x86: Unify CPU -> NUMA node mapping between 32 and 64bit	2011-01-28 14:54:09 +01:00
Kconfig.cpu	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Kconfig.debug	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Makefile	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 13:06:00 -07:00
Makefile_32.cpu	jump label: Add work around to i386 gcc asm goto bug	2010-10-29 14:45:29 -04:00