With pseudo NMIs enabled, interrupt controller can be configured to
deliver SGI as a pseudo NMI. So add corresponding handling for SGIs.
Signed-off-by: Sumit Garg <sumit.g...@linaro.org>
---
drivers/irqchip/irq-gic-v3.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index d7006ef..be361bf 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -609,17 +609,29 @@ static inline void gic_handle_nmi(u32 irqnr, struct
pt_regs *regs)
if (irqs_enabled)
nmi_enter();
- if (static_branch_likely(&supports_deactivate_key))
- gic_write_eoir(irqnr);
/*
* Leave the PSR.I bit set to prevent other NMIs to be
* received while handling this one.
* PSR.I will be restored when we ERET to the
* interrupted context.
*/
- err = handle_domain_nmi(gic_data.domain, irqnr, regs);
- if (err)
- gic_deactivate_unhandled(irqnr);
+ if (likely(irqnr > 15)) {
+ if (static_branch_likely(&supports_deactivate_key))
+ gic_write_eoir(irqnr);
+
+ err = handle_domain_nmi(gic_data.domain, irqnr, regs);
+ if (err)
+ gic_deactivate_unhandled(irqnr);
+ } else {
+ gic_write_eoir(irqnr);
+ if (static_branch_likely(&supports_deactivate_key))
+ gic_write_dir(irqnr);
+#ifdef CONFIG_SMP
+ handle_IPI(irqnr, regs);
+#else
+ WARN_ONCE(true, "Unexpected SGI received!\n");
+#endif
+ }
if (irqs_enabled)
nmi_exit();
--
2.7.4
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