For the origin value of CNTV_CVAL_EL0 architecturally UNKNOWN, we may receive an unexpected PPI before we actual trigger the timer interrupt. So we should set ARCH_TIMER_CTL_IMASK in timer_prep.
Signed-off-by: Jingyi Wang <[email protected]> --- arm/micro-bench.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arm/micro-bench.c b/arm/micro-bench.c index 362f93e..95c418c 100644 --- a/arm/micro-bench.c +++ b/arm/micro-bench.c @@ -227,7 +227,7 @@ static bool timer_prep(void) } writel(1 << PPI(TIMER_VTIMER_IRQ), gic_isenabler); - write_sysreg(ARCH_TIMER_CTL_ENABLE, cntv_ctl_el0); + write_sysreg(ARCH_TIMER_CTL_IMASK | ARCH_TIMER_CTL_ENABLE, cntv_ctl_el0); isb(); gic_prep_common(); -- 2.19.1 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
