Messages in this thread Patch in this message | | | From | Ricardo Neri <> | Subject | [RFC PATCH 02/23] genirq: Introduce IRQD_DELIVER_AS_NMI | Date | Tue, 12 Jun 2018 17:57:22 -0700 |
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Certain interrupt controllers (e.g., APIC) are capable of delivering interrupts to the CPU as non-maskable. Add the new IRQD_DELIVER_AS_NMI interrupt state flag. The purpose of this flag is to communicate to the underlying irqchip whether the interrupt must be delivered in this manner.
Cc: Ashok Raj <ashok.raj@intel.com> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jacob Pan <jacob.jun.pan@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Bartosz Golaszewski <brgl@bgdev.pl> Cc: Doug Berger <opendmb@gmail.com> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com> Cc: x86@kernel.org Cc: iommu@lists.linux-foundation.org
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> --- include/linux/irq.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h index 65916a3..7271a2c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -208,6 +208,7 @@ struct irq_data { * IRQD_SINGLE_TARGET - IRQ allows only a single affinity target * IRQD_DEFAULT_TRIGGER_SET - Expected trigger already been set * IRQD_CAN_RESERVE - Can use reservation mode + * IRQD_DELIVER_AS_NMI - Deliver this interrupt as non-maskable */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -230,6 +231,7 @@ enum { IRQD_SINGLE_TARGET = (1 << 24), IRQD_DEFAULT_TRIGGER_SET = (1 << 25), IRQD_CAN_RESERVE = (1 << 26), + IRQD_DELIVER_AS_NMI = (1 << 27), }; #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors) @@ -389,6 +391,16 @@ static inline bool irqd_can_reserve(struct irq_data *d) return __irqd_to_state(d) & IRQD_CAN_RESERVE; } +static inline void irqd_set_deliver_as_nmi(struct irq_data *d) +{ + __irqd_to_state(d) |= IRQD_DELIVER_AS_NMI; +} + +static inline bool irqd_deliver_as_nmi(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_DELIVER_AS_NMI; +} + #undef __irqd_to_state static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) -- 2.7.4
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