[PATCH v8 18/26] arm64: gic-v3: Implement arch support for priority masking
From: Julien Thierry <hidden>
Date: 2019-01-08 14:08:48
Also in:
lkml
Subsystem:
arm generic interrupt controller drivers, arm64 port (aarch64 architecture), the rest · Maintainers:
Marc Zyngier, Catalin Marinas, Will Deacon, Linus Torvalds
Implement architecture specific primitive allowing the GICv3 driver to use priorities to mask interrupts. Signed-off-by: Julien Thierry <redacted> Suggested-by: Daniel Thompson <redacted> Cc: Marc Zyngier <redacted> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <redacted> --- arch/arm64/include/asm/arch_gicv3.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/include/asm/arch_gicv3.h b/arch/arm64/include/asm/arch_gicv3.h
index b5f8142..14b41dd 100644
--- a/arch/arm64/include/asm/arch_gicv3.h
+++ b/arch/arm64/include/asm/arch_gicv3.h@@ -22,6 +22,7 @@ #ifndef __ASSEMBLY__ +#include <linux/irqchip/arm-gic-common.h> #include <linux/stringify.h> #include <asm/barrier.h> #include <asm/cacheflush.h>
@@ -162,14 +163,13 @@ static inline bool gic_prio_masking_enabled(void) static inline void gic_pmr_mask_irqs(void) { - /* Should not get called yet. */ - WARN_ON_ONCE(true); + BUILD_BUG_ON(GICD_INT_DEF_PRI <= GIC_PRIO_IRQOFF); + gic_write_pmr(GIC_PRIO_IRQOFF); } static inline void gic_arch_enable_irqs(void) { - /* Should not get called yet. */ - WARN_ON_ONCE(true); + asm volatile ("msr daifclr, #2" : : : "memory"); } #endif /* __ASSEMBLY__ */
--
1.9.1
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