x86, ioapic: Fix non atomic allocation with interrupts disabled

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Impact: fix possible race

save_mask_IO_APIC_setup() was using non atomic memory allocation while getting
called with interrupts disabled. Fix this by splitting this into two different
function. Allocation part save_IO_APIC_setup() now happens before
disabling interrupts.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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Suresh Siddha 2009-03-16 17:05:03 -07:00 • committed by H. Peter Anvin

parent 29b61be65a

commit 05c3dc2c4b

3 changed files with 31 additions and 17 deletions

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3

arch/x86/include/asm/io_apic.h

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11

arch/x86/kernel/apic/apic.c

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34

arch/x86/kernel/apic/io_apic.c

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