Re: [PATCH v8 03/15] s390x: protvirt: Add migration blocker

[David Hildenbrand]

On 10.03.20 14:39, Janosch Frank wrote:
> Migration is not yet supported.
> 
> Signed-off-by: Janosch Frank <address@hidden>
> ---
>  hw/s390x/s390-virtio-ccw.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
> index 455ad31718..1ceb42c0b5 100644
> --- a/hw/s390x/s390-virtio-ccw.c
> +++ b/hw/s390x/s390-virtio-ccw.c
> @@ -43,6 +43,9 @@
>  #include "sysemu/sysemu.h"
>  #include "hw/s390x/pv.h"
>  #include <linux/kvm.h>
> +#include "migration/blocker.h"
> +
> +static Error *pv_mig_blocker;
>  
>  S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
>  {
> @@ -323,15 +326,29 @@ static void s390_machine_unprotect(S390CcwMachineState 
> *ms)
>  
>      s390_pv_vm_disable();
>      ms->pv = false;
> +    migrate_del_blocker(pv_mig_blocker);
> +    error_free_or_abort(&pv_mig_blocker);
>  }
>  
>  static int s390_machine_protect(S390CcwMachineState *ms)
>  {
> +    static Error *local_err;

You have to initialize it to NULL.

>      int rc;
>  
> +    error_setg(&pv_mig_blocker,
> +               "protected VMs are currently not migrateable.");
> +    rc = migrate_add_blocker(pv_mig_blocker, &local_err);
> +    if (local_err) {
> +        error_report_err(local_err);
> +        error_free_or_abort(&pv_mig_blocker);
> +        return rc;
> +    }
> +
>      /* Create SE VM */
>      rc = s390_pv_vm_enable();
>      if (rc) {
> +        error_report_err(local_err);
> +        error_free_or_abort(&pv_mig_blocker);

Actually, migrate_del_blocker(pv_mig_blocker) as well, no?

>          return rc;
>      }
>  
> 


-- 
Thanks,

David / dhildenb