From: David Vrabel <david.vrabel@citrix.com>
Date: Mon, 23 Sep 2013 11:52:21 +0000 (+0100)
Subject: xen/x86: set VIRQ_TIMER priority to maximum
X-Git-Tag: next-20140107~22^2~21
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8785c67663b6ba023c7c6d61d37d8e08c00d86a8;p=karo-tx-linux.git

xen/x86: set VIRQ_TIMER priority to maximum

Commit bee980d9e (xen/events: Handle VIRQ_TIMER before any other hardirq
in event loop) effectively made the VIRQ_TIMER the highest priority event
when using the 2-level ABI.

Set the VIRQ_TIMER priority to the highest so this behaviour is retained
when using the FIFO-based ABI.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---

diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 12a1ca707b94..7b78f88c1707 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -446,6 +446,7 @@ void xen_setup_timer(int cpu)
 				      IRQF_PERCPU|IRQF_NOBALANCING|IRQF_TIMER|
 				      IRQF_FORCE_RESUME,
 				      name, NULL);
+	(void)xen_set_irq_priority(irq, XEN_IRQ_PRIORITY_MAX);
 
 	memcpy(evt, xen_clockevent, sizeof(*evt));