linux_dsm_epyc7002/arch/x86
Mike Travis 71fff5e6ca x86: convert cpu_to_apicid to be a per cpu variable
This patch converts the x86_cpu_to_apicid array to be a per cpu
variable. This saves sizeof(apicid) * NR unused cpus.  Access is mostly
from startup and CPU HOTPLUG functions.

MP_processor_info() is one of the functions that require access to the
x86_cpu_to_apicid array before the per_cpu data area is setup.  For this
case, a pointer to the __initdata array is initialized in setup_arch()
and removed in smp_prepare_cpus() after the per_cpu data area is
initialized.

A second change is included to change the initial array value of ARCH
i386 from 0xff to BAD_APICID to be consistent with ARCH x86_64.

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-19 20:35:03 +02:00
..
boot [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
crypto x86_64: move crypto 2007-10-11 11:17:03 +02:00
ia32 x86: Use linux/elfcore-compat.h 2007-10-19 20:35:02 +02:00
kernel x86: convert cpu_to_apicid to be a per cpu variable 2007-10-19 20:35:03 +02:00
lib x86: rename .i assembler includes to .h 2007-10-17 20:16:29 +02:00
mach-default x86: clean up struct irqaction initializers 2007-10-17 20:16:06 +02:00
mach-es7000 i386: es7000 minor cleanups 2007-10-17 20:16:15 +02:00
mach-generic i386: make struct apic_probe static 2007-10-17 20:15:54 +02:00
mach-visws [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
mach-voyager x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
math-emu kbuild: fix up CFLAGS usage 2007-10-14 21:49:42 +02:00
mm x86: convert cpu_to_apicid to be a per cpu variable 2007-10-19 20:35:03 +02:00
oprofile i386: make callgraph use dump_trace() on i386/x86_64 2007-10-19 20:35:03 +02:00
pci x86: pci use pci=bfsort for HP DL385 G2 and DL585 G2 2007-10-17 20:15:46 +02:00
power i386: move power 2007-10-11 11:16:34 +02:00
vdso x86: vdso linker script cleanup 2007-10-17 20:17:06 +02:00
video i386: move video 2007-10-11 11:16:56 +02:00
xen Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86 2007-10-17 13:13:16 -07:00