| Message ID | 2a142f1155027e1fa6e15b0ec58febf70bf7b8a0.1329232393.git.jan.kiszka@siemens.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/cpus.c b/cpus.c index 4e65894..290daa8 100644 --- a/cpus.c +++ b/cpus.c @@ -870,6 +870,18 @@ void pause_all_vcpus(void) penv = penv->next_cpu; } + if (!qemu_thread_is_self(&io_thread)) { + cpu_stop_current(); + if (!kvm_enabled()) { + while (penv) { + penv->stop = 0; + penv->stopped = 1; + penv = penv->next_cpu; + } + return; + } + } + while (!all_vcpus_paused()) { qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); penv = first_cpu;
In order to perform critical manipulations on the VM state in the context of a VCPU, specifically code patching, stopping and resuming of all VCPUs may be necessary. resume_all_vcpus is already compatible, now enable pause_all_vcpus for this use case by stopping the calling context before starting to wait for the whole gang. CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> --- cpus.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)