[Qemu-devel] [PATCH v4 6/7] vl.c: Rename MAX_CPUMASK_BITS to MAX_CPUS

[Eduardo Habkost]

Also, document what the macro is really useful for.

Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
---
Changes v3 -> v4:
  * s/should/shall/ at the MAX_CPUS comment
---
 include/sysemu/sysemu.h |  9 ++++++++-
 vl.c                    | 10 +++++-----
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index b90df9a..6bc1a85 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -133,7 +133,14 @@ extern uint8_t qemu_extra_params_fw[2];
 extern QEMUClockType rtc_clock;
 
 #define MAX_NODES 64
-#define MAX_CPUMASK_BITS 255
+
+/* The following shall be true for all CPUs:
+ *   cpu->cpu_index < max_cpus <= MAX_CPUS
+ *
+ * Note that cpu->get_arch_id() may be larger than MAX_CPUS.
+ */
+#define MAX_CPUS 255
+
 extern int nb_numa_nodes;
 extern uint64_t node_mem[MAX_NODES];
 extern unsigned long *node_cpumask[MAX_NODES];
diff --git a/vl.c b/vl.c
index bca5c95..64b38a5 100644
--- a/vl.c
+++ b/vl.c
@@ -1278,11 +1278,11 @@ static void numa_node_parse_cpus(int nodenr, const char 
*cpus)
         goto error;
     }
 
-    if (endvalue >= MAX_CPUMASK_BITS) {
-        endvalue = MAX_CPUMASK_BITS - 1;
+    if (endvalue >= MAX_CPUS) {
+        endvalue = MAX_CPUS - 1;
         fprintf(stderr,
             "qemu: NUMA: A max of %d VCPUs are supported\n",
-             MAX_CPUMASK_BITS);
+             MAX_CPUS);
     }
 
     if (endvalue < value) {
@@ -2954,7 +2954,7 @@ int main(int argc, char **argv, char **envp)
 
     for (i = 0; i < MAX_NODES; i++) {
         node_mem[i] = 0;
-        node_cpumask[i] = bitmap_new(MAX_CPUMASK_BITS);
+        node_cpumask[i] = bitmap_new(MAX_CPUS);
     }
 
     nb_numa_nodes = 0;
@@ -4245,7 +4245,7 @@ int main(int argc, char **argv, char **envp)
         }
 
         for (i = 0; i < nb_numa_nodes; i++) {
-            if (!bitmap_empty(node_cpumask[i], MAX_CPUMASK_BITS)) {
+            if (!bitmap_empty(node_cpumask[i], MAX_CPUS)) {
                 break;
             }
         }
-- 
1.8.5.3