linux/arch
Fernando Luis Vazquez Cao a36166c6ef Use the APIC to determine the hardware processor id - i386
hard_smp_processor_id used to be just a macro that hard-coded
hard_smp_processor_id to 0 in the non SMP case.  When booting non SMP kernels
on hardware where the boot ioapic id is not 0 this turns out to be a problem.
This is happens frequently in the case of kdump and once in a great while in
the case of real hardware.

Use the APIC to determine the hardware processor id in both UP and SMP kernels
to fix this issue.

Notice that hard_smp_processor_id is only used by SMP code or by code that
works with apics so we do not need to handle the case when apics are not
present and hard_smp_processor_id should never be called there.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:48 -07:00
..
alpha utimensat implementation 2007-05-08 11:15:18 -07:00
arm Add IRQF_IRQPOLL flag on arm 2007-05-08 11:15:22 -07:00
arm26 header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
avr32 header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
blackfin blackfin architecture 2007-05-07 12:12:58 -07:00
cris dma_declare_coherent_memory wrong allocation 2007-05-08 11:15:14 -07:00
frv FRV: Replace pgd management via slabs through quicklists 2007-05-09 12:30:46 -07:00
h8300 header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
i386 Use the APIC to determine the hardware processor id - i386 2007-05-09 12:30:48 -07:00
ia64 Add IRQF_IRQPOLL flag on IA64 2007-05-08 11:15:22 -07:00
m32r header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
m68k header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
m68knommu header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
mips Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2007-05-08 11:57:17 -07:00
parisc Add IRQF_IRQPOLL flag on parisc 2007-05-08 11:15:22 -07:00
powerpc Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2007-05-08 11:57:17 -07:00
ppc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-05-08 11:50:19 -07:00
s390 no longer #include <asm/kdebug.h> 2007-05-08 11:15:20 -07:00
sh Add IRQF_IRQPOLL flag on sh 2007-05-08 11:15:22 -07:00
sh64 Simplify kallsyms_lookup() 2007-05-08 11:15:08 -07:00
sparc [SPARC]: Wire up utimensat syscall. 2007-05-08 17:50:14 -07:00
sparc64 Remove hardcoding of hard_smp_processor_id on UP systems 2007-05-09 12:30:48 -07:00
um uml: turn build warnings into comments 2007-05-09 12:30:48 -07:00
v850 header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
x86_64 x86, serial: convert legacy COM ports to platform devices 2007-05-08 11:15:23 -07:00
xtensa header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00