xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86, ioapic: Fix non atomic allocation with interrupts disabled

Browse Source 
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>
This commit is contained in:
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
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/include/asm/io_apic.h
View File

@@ -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