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x86/apic: Fix UP boot crash

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Commit 31b3c9d723 ("xen/x86: Implement x86_apic_ops") implemented
this:

... without considering that on UP the function pointer might be NULL.

Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: http://lkml.kernel.org/n/tip-3pfty0ml4yp62phbkchichh0@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2012-05-07 19:19:56 +02:00
parent 42fa425043
commit 9438ef7f4e
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/setup.c
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@ -1012,7 +1012,8 @@ void __init setup_arch(char **cmdline_p)
init_cpu_to_node();
init_apic_mappings();
x86_io_apic_ops.init();
if (x86_io_apic_ops.init)
x86_io_apic_ops.init();
kvm_guest_init();