target/arm: Remove redundant scaling of nexttick
The corner-case codepath was adjusting nexttick such that overflow
wouldn't occur when timer_mod() scaled the value back up. Remove a use
of GTIMER_SCALE and avoid unnecessary operations by calling
timer_mod_ns() directly.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: f8c680720e3abe55476e6d9cb604ad27fdbeb2e0.1576215453.git-series.andrew@aj.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 5074b5f..31fab09 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -2486,9 +2486,10 @@
* timer expires we will reset the timer for any remaining period.
*/
if (nexttick > INT64_MAX / GTIMER_SCALE) {
- nexttick = INT64_MAX / GTIMER_SCALE;
+ timer_mod_ns(cpu->gt_timer[timeridx], INT64_MAX);
+ } else {
+ timer_mod(cpu->gt_timer[timeridx], nexttick);
}
- timer_mod(cpu->gt_timer[timeridx], nexttick);
trace_arm_gt_recalc(timeridx, irqstate, nexttick);
} else {
/* Timer disabled: ISTATUS and timer output always clear */
