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| author | Julien Thierry <julien.thierry@arm.com> | 2019-01-31 15:58:44 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-02-06 11:05:18 +0100 |
| commit | 3f1f3234bc2db1c16b9818b9a15a5d58ad45251c (patch) | |
| tree | 5ebd1e626cf13bf5c92fe9ce85761092de2e6c43 /arch/arm64/include/asm/arch_gicv3.h | |
| parent | arm/arm64: gic-v3: Add PMR and RPR accessors (diff) | |
| download | linux-3f1f3234bc2db1c16b9818b9a15a5d58ad45251c.tar.xz linux-3f1f3234bc2db1c16b9818b9a15a5d58ad45251c.zip | |
irqchip/gic-v3: Switch to PMR masking before calling IRQ handler
Mask the IRQ priority through PMR and re-enable IRQs at CPU level,
allowing only higher priority interrupts to be received during interrupt
handling.
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/arch_gicv3.h')
| -rw-r--r-- | arch/arm64/include/asm/arch_gicv3.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/arch_gicv3.h b/arch/arm64/include/asm/arch_gicv3.h index 37193e224a50..b5f8142bf802 100644 --- a/arch/arm64/include/asm/arch_gicv3.h +++ b/arch/arm64/include/asm/arch_gicv3.h @@ -155,5 +155,22 @@ static inline u32 gic_read_rpr(void) #define gits_write_vpendbaser(v, c) writeq_relaxed(v, c) #define gits_read_vpendbaser(c) readq_relaxed(c) +static inline bool gic_prio_masking_enabled(void) +{ + return system_uses_irq_prio_masking(); +} + +static inline void gic_pmr_mask_irqs(void) +{ + /* Should not get called yet. */ + WARN_ON_ONCE(true); +} + +static inline void gic_arch_enable_irqs(void) +{ + /* Should not get called yet. */ + WARN_ON_ONCE(true); +} + #endif /* __ASSEMBLY__ */ #endif /* __ASM_ARCH_GICV3_H */ |