[PATCH] x86_64: Don't assume BSP has ID 0 in new smp bootup

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This patch removes the assumption that LAPIC entries contain the BSP as its
first entry.  This is a slight improvement to the temporary fix submitted by
Suresh Siddha.

- Removes assumption that LAPIC entries contain BSP first.

- Builds x86_acpiid_to_apicid[] and bios_cpu_apicid[] properly with BSP as
  first entry.

- Made maxcpus=1 boot on these systems.  Since the parsing earlier in
  arch/x86_64/kernel/mpparse.c stopped after maxcpus entries, other entries
  were not processed, this causes kernel not to boot on these systems.

TBD: x86_acpiid_to_apicid and bios_cpu_apicid[] seem to be exactly the
     same.  This could be removed, but might need more work to cleanup.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

...

This commit is contained in:

Andi Kleen 2005-05-16 21:53:35 -07:00 • committed by Linus Torvalds

parent 751521149a

commit 18a2b64712

2 changed files with 14 additions and 8 deletions

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20

arch/x86_64/kernel/mpparse.c

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2

arch/x86_64/kernel/smpboot.c

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