[kvm-unit-tests PATCH v2 1/2] arm: pmu: Declare pmu_stats as volatile

[Eric Auger <eric.auger@redhat.com>]

Declare pmu_stats as volatile in order to prevent the compiler
from caching previously read values. This actually fixes
pmu-overflow-interrupt failures on some HW.

Reported-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 arm/pmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arm/pmu.c b/arm/pmu.c
index a91a7b1f..86199577 100644
--- a/arm/pmu.c
+++ b/arm/pmu.c
@@ -328,7 +328,7 @@ asm volatile(
 	: "x9", "x10", "cc");
 }
 
-static struct pmu_stats pmu_stats;
+static volatile struct pmu_stats pmu_stats;
 
 static void irq_handler(struct pt_regs *regs)
 {
-- 
2.41.0