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Merge branch irq/misc-5.15 into irq/irqchip-next

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* irq/misc-5.15:
  : .
  : Various irqchip fixes:
  :
  : - Fix edge interrupt support on loongson systems
  : - Advertise lack of wake-up logic on mtk-sysirq
  : - Fix mask tracking on the Apple AIC
  : - Correct priority reading of arm64 pseudo-NMI when SCR_EL3.FIQ==0
  : .
  irqchip/gic-v3: Fix priority comparison when non-secure priorities are used
  irqchip/apple-aic: Fix irq_disable from within irq handlers

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2021-08-20 15:03:40 +01:00
commit acdcfd94ef
2 changed files with 23 additions and 2 deletions
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2
drivers/irqchip/irq-apple-aic.c
View File

@ -226,7 +226,7 @@ static void aic_irq_eoi(struct irq_data *d)
* Reading the interrupt reason automatically acknowledges and masks
* the IRQ, so we just unmask it here if needed.
*/
if (!irqd_irq_disabled(d) && !irqd_irq_masked(d))
if (!irqd_irq_masked(d))
aic_irq_unmask(d);
}

23
drivers/irqchip/irq-gic-v3.c
View File

@ -100,6 +100,27 @@ EXPORT_SYMBOL(gic_pmr_sync);
DEFINE_STATIC_KEY_FALSE(gic_nonsecure_priorities);
EXPORT_SYMBOL(gic_nonsecure_priorities);
/*
* When the Non-secure world has access to group 0 interrupts (as a
* consequence of SCR_EL3.FIQ == 0), reading the ICC_RPR_EL1 register will
* return the Distributor's view of the interrupt priority.
*
* When GIC security is enabled (GICD_CTLR.DS == 0), the interrupt priority
* written by software is moved to the Non-secure range by the Distributor.
*
* If both are true (which is when gic_nonsecure_priorities gets enabled),
* we need to shift down the priority programmed by software to match it
* against the value returned by ICC_RPR_EL1.
*/
#define GICD_INT_RPR_PRI(priority) \
({ \
u32 __priority = (priority); \
if (static_branch_unlikely(&gic_nonsecure_priorities)) \
__priority = 0x80 | (__priority >> 1); \
\
__priority; \
})
/* ppi_nmi_refs[n] == number of cpus having ppi[n + 16] set as NMI */
static refcount_t *ppi_nmi_refs;
@ -692,7 +713,7 @@ static asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs
return;
if (gic_supports_nmi() &&
unlikely(gic_read_rpr() == GICD_INT_NMI_PRI)) {
unlikely(gic_read_rpr() == GICD_INT_RPR_PRI(GICD_INT_NMI_PRI))) {
gic_handle_nmi(irqnr, regs);
return;
}