[Xen-devel] [PATCH 15/16] xen/x86: set VIRQ_TIMER priority to maximum

[David Vrabel <david.vrabel@xxxxxxxxxx>]

From: David Vrabel <david.vrabel@xxxxxxxxxx>

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@xxxxxxxxxx>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
 arch/x86/xen/time.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index ee36589..10e11c1 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -447,6 +447,7 @@ void xen_setup_timer(int cpu)
                                      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));
 
-- 
1.7.2.5


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