From: Zhao Liu <zhao1....@intel.com> In machine_parse_smp_config(), the number of total CPUs is calculated by:
drawers * books * sockets * dies * clusters * cores * threads To avoid missing the future new topology level, use a local variable to cache the calculation result so that total CPUs are only calculated once. Signed-off-by: Zhao Liu <zhao1....@intel.com> --- hw/core/machine-smp.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c index 3d9799aef039..0e398ef02666 100644 --- a/hw/core/machine-smp.c +++ b/hw/core/machine-smp.c @@ -91,6 +91,7 @@ void machine_parse_smp_config(MachineState *ms, unsigned cores = config->cores; unsigned threads = config->threads; unsigned maxcpus = config->maxcpus; + unsigned total_cpus; /* * Specified CPU topology parameters must be greater than zero, @@ -211,8 +212,8 @@ void machine_parse_smp_config(MachineState *ms, } } - maxcpus = maxcpus > 0 ? maxcpus : drawers * books * sockets * dies * - clusters * cores * threads; + total_cpus = drawers * books * sockets * dies * clusters * cores * threads; + maxcpus = maxcpus > 0 ? maxcpus : total_cpus; cpus = cpus > 0 ? cpus : maxcpus; ms->smp.cpus = cpus; @@ -228,8 +229,7 @@ void machine_parse_smp_config(MachineState *ms, mc->smp_props.has_clusters = config->has_clusters; /* sanity-check of the computed topology */ - if (drawers * books * sockets * dies * clusters * cores * threads != - maxcpus) { + if (total_cpus != maxcpus) { g_autofree char *topo_msg = cpu_hierarchy_to_string(ms); error_setg(errp, "Invalid CPU topology: " "product of the hierarchy must match maxcpus: " -- 2.34.1