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[RFC PATCH] target/arm/arm-powerctl: Restrict to ARM cores


From: Philippe Mathieu-Daudé
Subject: [RFC PATCH] target/arm/arm-powerctl: Restrict to ARM cores
Date: Mon, 6 Jan 2025 19:23:43 +0100

When running on a heterogeneous setup, the CPU_FOREACH()
macro in arm_get_cpu_by_id() iterates on all vCPUs,
regardless they are ARM or not. Check the CPU class type
and skip the non-ARM instances.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/arm/arm-powerctl.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/target/arm/arm-powerctl.c b/target/arm/arm-powerctl.c
index 20c70c7d6bb..a080a6ab79f 100644
--- a/target/arm/arm-powerctl.c
+++ b/target/arm/arm-powerctl.c
@@ -36,9 +36,11 @@ CPUState *arm_get_cpu_by_id(uint64_t id)
     DPRINTF("cpu %" PRId64 "\n", id);
 
     CPU_FOREACH(cpu) {
-        ARMCPU *armcpu = ARM_CPU(cpu);
+        if (!object_class_dynamic_cast((ObjectClass *)cpu->cc, TYPE_ARM_CPU)) {
+            continue;
+        }
 
-        if (arm_cpu_mp_affinity(armcpu) == id) {
+        if (arm_cpu_mp_affinity((ARMCPU *)cpu) == id) {
             return cpu;
         }
     }
-- 
2.47.1




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