Yinghai Lu 295594e9cf x86: Fix vSMP boot crash ... 2.6.31-rc7 does not boot on vSMP systems: [ 8.501108] CPU31: Thermal monitoring enabled (TM1) [ 8.501127] CPU 31 MCA banks SHD:2 SHD:3 SHD:5 SHD:6 SHD:8 [ 8.650254] CPU31: Intel(R) Xeon(R) CPU E5540 @ 2.53GHz stepping 04 [ 8.710324] Brought up 32 CPUs [ 8.713916] Total of 32 processors activated (162314.96 BogoMIPS). [ 8.721489] ERROR: parent span is not a superset of domain->span [ 8.727686] ERROR: domain->groups does not contain CPU0 [ 8.733091] ERROR: groups don't span domain->span [ 8.737975] ERROR: domain->cpu_power not set [ 8.742416] Ravikiran Thirumalai bisected it to: | commit 2759c3287d | x86: don't call read_apic_id if !cpu_has_apic The problem is that on vSMP systems the CPUID derived initial-APICIDs are overlapping - so we need to fall back on hard_smp_processor_id() which reads the local APIC. Both come from the hardware (influenced by firmware though) so it's a tough call which one to trust. Doing the quirk expresses the vSMP property properly and also does not affect other systems, so we go for this solution instead of a revert. Reported-and-Tested-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shai Fultheim <shai@scalex86.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <4A944D3C.5030100@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-08-26 10:13:17 +02:00
..
boot	x86: add vmlinux.lds to targets in arch/x86/boot/compressed/Makefile	2009-08-20 16:08:58 -07:00
configs
crypto	crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu template	2009-06-18 19:44:01 +08:00
ia32
include/asm	x86, pat: Allow ISA memory range uncacheable mapping requests	2009-08-17 14:12:44 -07:00
kernel	x86: Fix vSMP boot crash	2009-08-26 10:13:17 +02:00
kvm	KVM: MMU: limit rmap chain length	2009-08-06 12:06:54 +03:00
lguest	lguest: update commentry	2009-07-30 16:03:46 +09:30
lib	x86, msr: execute on the correct CPU subset	2009-08-03 14:48:13 -07:00
math-emu
mm	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-08-25 11:23:25 -07:00
oprofile	x86/oprofile: rename kernel parameter for architectural perfmon to arch_perfmon	2009-07-10 05:22:50 +02:00
pci	x86/pci: insert ioapic resource before assigning unassigned resources	2009-07-10 13:03:14 -07:00
power	x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR	2009-07-08 13:20:13 +02:00
vdso	gcov: enable GCOV_PROFILE_ALL for x86_64	2009-06-18 13:03:58 -07:00
video
xen	x86, xen: Initialize cx to suppress warning	2009-08-25 21:10:32 -07:00
Kbuild
Kconfig	perf_counter, x86: Fix/improve apic fallback	2009-08-12 14:12:49 +02:00
Kconfig.cpu
Kconfig.debug
Makefile
Makefile_32.cpu