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authorCatalin Marinas <catalin.marinas@arm.com>2013-11-21 18:46:17 +0400
committerCatalin Marinas <catalin.marinas@arm.com>2013-11-25 20:44:05 +0400
commitb3bf6aa7e79117419f7eddccf0b7af4382d823c3 (patch)
tree0f055403c68a07fe20673c15f90dbcd4db8965f8 /arch/arm64/include/asm/irqflags.h
parentdf503ba7f653c590b475ab80bde788edf5af70d5 (diff)
downloadlinux-b3bf6aa7e79117419f7eddccf0b7af4382d823c3.tar.xz
arm64: Unmask asynchronous aborts when in kernel mode
The asynchronous aborts are generally fatal for the kernel but they can be masked via the pstate A bit. If a system error happens while in kernel mode, it won't be visible until returning to user space. This patch enables this kind of abort early to help identifying the cause. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/irqflags.h')
-rw-r--r--arch/arm64/include/asm/irqflags.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/irqflags.h b/arch/arm64/include/asm/irqflags.h
index aa11943b8502..b2fcfbc51ecc 100644
--- a/arch/arm64/include/asm/irqflags.h
+++ b/arch/arm64/include/asm/irqflags.h
@@ -56,6 +56,9 @@ static inline void arch_local_irq_disable(void)
#define local_fiq_enable() asm("msr daifclr, #1" : : : "memory")
#define local_fiq_disable() asm("msr daifset, #1" : : : "memory")
+#define local_async_enable() asm("msr daifclr, #4" : : : "memory")
+#define local_async_disable() asm("msr daifset, #4" : : : "memory")
+
/*
* Save the current interrupt enable state.
*/