hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT -------------------------------- The MPAM hardware does not allow setting 0 as the bandwidth limit value. Otherwise, it would exhibit undefined behavior. Fixes: 58db5c68e84a ("untested: arm_mpam: resctrl: Add support for MB resource") Signed-off-by: Zeng Heng <zengheng4@huawei.com> --- drivers/platform/mpam/mpam_resctrl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/mpam/mpam_resctrl.c b/drivers/platform/mpam/mpam_resctrl.c index 08aef61ce4cf..a709ada864e0 100644 --- a/drivers/platform/mpam/mpam_resctrl.c +++ b/drivers/platform/mpam/mpam_resctrl.c @@ -926,6 +926,7 @@ static int mpam_resctrl_resource_init(struct mpam_resctrl_res *res) r->membw.delay_linear = true; r->membw.throttle_mode = THREAD_THROTTLE_UNDEFINED; + r->membw.min_bw = 1; r->membw.bw_gran = get_mba_granularity(cprops); /* Round up to at least 1% */ -- 2.25.1