On 3/9/25 14:34, Richard Henderson wrote:
On 9/3/25 12:06, Philippe Mathieu-Daudé wrote:
Since hvf_wfi() calls hv_vcpu_get_sys_reg(), which
must run on a vCPU, it also must. Mention it.

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
---
  target/arm/hvf/hvf.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index d87a41bcc53..05fc591b523 100644
--- a/target/arm/hvf/hvf.c
+++ b/target/arm/hvf/hvf.c
@@ -1836,6 +1836,7 @@ static void hvf_wait_for_ipi(CPUState *cpu, struct timespec *ts)
      bql_lock();
  }
+/* Must be called by the owning thread */
  static void hvf_wfi(CPUState *cpu)
  {
      ARMCPU *arm_cpu = ARM_CPU(cpu);

How can it not?  Are all these separate patches and annotations helpful?

Well they helped me understand the locking issue in patch 15 in
hvf_arm_get_host_cpu_features().

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