[Xen-devel] [RFC 06/16] gic: drop interrupts enabling on interrupts processing

[Andrii Anisov <andrii.anisov@xxxxxxxxx>]

From: Andrii Anisov <andrii_anisov@xxxxxxxx>

This reduces the number of context switches in case we have an
interrupt storm. We will read out all of those interrupt in the
loop anyway.

Signed-off-by: Andrii Anisov <andrii_anisov@xxxxxxxx>
---
 xen/arch/arm/gic.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 77fc06f..b10783b 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -390,10 +390,8 @@ void gic_interrupt(struct cpu_user_regs *regs, int is_fiq)
 
         if ( likely(irq >= 16 && irq < 1020) )
         {
-            local_irq_enable();
             isb();
             do_IRQ(regs, irq, is_fiq);
-            local_irq_disable();
         }
 #ifdef CONFIG_GICV3
         else if ( is_lpi(irq) )
-- 
2.7.4


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