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| author | Jack Steiner <steiner@sgi.com> | 2008-06-19 21:51:05 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 12:23:28 +0200 |
| commit | b6df1b8bc1250191cfee15627697111c1cbda53f (patch) | |
| tree | b5991eafa0f5f4e155921bd10d4f44696c271b8d /arch/x86/kernel/apic_64.c | |
| parent | d400524affeb84bdfc2b00cd561fbfb8c09dadd7 (diff) | |
| download | blackbird-op-linux-b6df1b8bc1250191cfee15627697111c1cbda53f.tar.gz blackbird-op-linux-b6df1b8bc1250191cfee15627697111c1cbda53f.zip | |
x86: fix stack overflow for large values of MAX_APICS
physid_mask_of_physid() causes a huge stack (12k) to be created if the
number of APICS is large. Replace physid_mask_of_physid() with a
new function that does not create large stacks. This is a problem only
on large x86_64 systems.
this paves the way to increase MAX_APICS.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Cc: mingo@elte.hu
Cc: tglx@linutronix.de
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic_64.c')
| -rw-r--r-- | arch/x86/kernel/apic_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index 0633cfd0dc29..5e22f8d2d507 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -942,7 +942,7 @@ int __init APIC_init_uniprocessor(void) verify_local_APIC(); - phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid); + physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map); apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid)); setup_local_APIC(); |
