diff options
| author |   Suresh Siddha <suresh.b.siddha@intel.com> | 2009-03-16 17:05:03 -0700 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2009-03-17 15:45:29 -0700 |
| commit | 05c3dc2c4b60387769cbe73174347de4cf85f0c9 (patch) | |
| tree | 7e5918518c5f22f6121ff885283bef5397a0a842 /arch/x86/include/asm/io_apic.h | |
| parent | x86, x2apic: cleanup ifdef CONFIG_INTR_REMAP in io_apic code (diff) | |
| download | linux-dev-05c3dc2c4b60387769cbe73174347de4cf85f0c9.tar.xz linux-dev-05c3dc2c4b60387769cbe73174347de4cf85f0c9.zip | |
x86, ioapic: Fix non atomic allocation with interrupts disabled
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>
Diffstat (limited to 'arch/x86/include/asm/io_apic.h')
| -rw-r--r-- | arch/x86/include/asm/io_apic.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index ffcd08f96e47..373cc2bbcad2 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -162,7 +162,8 @@ extern int (*ioapic_renumber_irq)(int ioapic, int irq); extern void ioapic_init_mappings(void); #ifdef CONFIG_X86_64 -extern int save_mask_IO_APIC_setup(void); +extern int save_IO_APIC_setup(void); +extern void mask_IO_APIC_setup(void); extern void restore_IO_APIC_setup(void); extern void reinit_intr_remapped_IO_APIC(int); #endif |