[Xen-devel] [PATCH] xen/arm: gic: Correctly check if an IRQ is valid in gic_interrupt

[Julien Grall <julien.grall@xxxxxxxxxx>]

The IRQ 1020 is reserved for special purpose, so the check should be
"irq < 1020" rather than "irq < 1021".

Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
---
 xen/arch/arm/gic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 390c8b0..940fb8e 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -570,7 +570,7 @@ void gic_interrupt(struct cpu_user_regs *regs, int is_fiq)
         /* Reading IRQ will ACK it */
         irq = gic_hw_ops->read_irq();
 
-        if ( likely(irq >= 16 && irq < 1021) )
+        if ( likely(irq >= 16 && irq < 1020) )
         {
             local_irq_enable();
             do_IRQ(regs, irq, is_fiq);
-- 
2.1.4


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