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| author | Suresh Siddha <[email protected]> | 2010-04-01 01:04:47 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2010-04-02 18:48:47 +0000 |
| commit | 472a474c6630efd195d3738339fd1bdc8aa3b1aa (patch) | |
| tree | 010b5b8191eba821b4940b4ab9fbd48ed468afa0 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | x86: Increase CONFIG_NODES_SHIFT max to 10 (diff) | |
| download | kernel-472a474c6630efd195d3738339fd1bdc8aa3b1aa.tar.gz kernel-472a474c6630efd195d3738339fd1bdc8aa3b1aa.zip | |
x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards
Jan Grossmann reported kernel boot panic while booting SMP
kernel on his system with a single core cpu. SMP kernels call
enable_IR_x2apic() from native_smp_prepare_cpus() and on
platforms where the kernel doesn't find SMP configuration we
ended up again calling enable_IR_x2apic() from the
APIC_init_uniprocessor() call in the smp_sanity_check(). Thus
leading to kernel panic.
Don't call enable_IR_x2apic() and default_setup_apic_routing()
from APIC_init_uniprocessor() in CONFIG_SMP case.
NOTE: this kind of non-idempotent and assymetric initialization
sequence is rather fragile and unclean, we'll clean that up
in v2.6.35. This is the minimal fix for v2.6.34.
Reported-by: [email protected]
Signed-off-by: Suresh Siddha <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]> # [v2.6.32.x, v2.6.33.x]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions