Re: [Qemu-devel] [PATCH for-3.2 v5 13/19] qdev-props: remove errp from GlobalProperty

[Igor Mammedov <imammedo@redhat.com>]

On Tue,  4 Dec 2018 18:20:17 +0400
Marc-André Lureau <marcandre.lureau@redhat.com> wrote:

> All qdev_prop_register_global() set &error_fatal for errp, except
> '-rtc driftfix=slew', which arguably should also use &error_fatal, as
this one shouldn't fail if machine has mc146818rtc instantiated,
it should warn only in case when CLI is mis-configured (i.e. machine
doesn't have mc146818rtc device). I'd say let it die in this case
and make user fix CLI.

> otherwise failing to apply the property would only report a warning.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  include/hw/qdev-core.h    | 6 ------
>  hw/core/qdev-properties.c | 4 ++--
>  qom/cpu.c                 | 1 -
>  target/i386/cpu.c         | 1 -
>  target/sparc/cpu.c        | 1 -
>  vl.c                      | 1 -
>  6 files changed, 2 insertions(+), 12 deletions(-)
> 
> diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
> index 7d25c99a77..1d4f4aa1f5 100644
> --- a/include/hw/qdev-core.h
> +++ b/include/hw/qdev-core.h
> @@ -250,18 +250,12 @@ struct PropertyInfo {
>  /**
>   * GlobalProperty:
>   * @used: Set to true if property was used when initializing a device.
> - * @errp: Error destination, used like first argument of error_setg()
> - *        in case property setting fails later. If @errp is NULL, we
> - *        print warnings instead of ignoring errors silently. For
> - *        hotplugged devices, errp is always ignored and warnings are
> - *        printed instead.
>   */
>  typedef struct GlobalProperty {
>      const char *driver;
>      const char *property;
>      const char *value;
>      bool used;
> -    Error **errp;
>  } GlobalProperty;
>  
>  static inline void
> diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
> index 3467e0485c..a2d25d3d37 100644
> --- a/hw/core/qdev-properties.c
> +++ b/hw/core/qdev-properties.c
> @@ -1238,8 +1238,8 @@ void qdev_prop_set_globals(DeviceState *dev)
>          if (err != NULL) {
>              error_prepend(&err, "can't apply global %s.%s=%s: ",
>                            prop->driver, prop->property, prop->value);
> -            if (!dev->hotplugged && prop->errp) {
> -                error_propagate(prop->errp, err);
> +            if (!dev->hotplugged) {
> +                error_propagate(&error_fatal, err);
>              } else {
>                  warn_report_err(err);
>              }
> diff --git a/qom/cpu.c b/qom/cpu.c
> index 9ad1372d57..5442a7323b 100644
> --- a/qom/cpu.c
> +++ b/qom/cpu.c
> @@ -312,7 +312,6 @@ static void cpu_common_parse_features(const char *typename, char *features,
>              prop->driver = typename;
>              prop->property = g_strdup(featurestr);
>              prop->value = g_strdup(val);
> -            prop->errp = &error_fatal;
>              qdev_prop_register_global(prop);
>          } else {
>              error_setg(errp, "Expected key=value format, found %s.",
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index f81d35e1f9..c687a9b694 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -3568,7 +3568,6 @@ static void x86_cpu_parse_featurestr(const char *typename, char *features,
>          prop->driver = typename;
>          prop->property = g_strdup(name);
>          prop->value = g_strdup(val);
> -        prop->errp = &error_fatal;
>          qdev_prop_register_global(prop);
>      }
>  
> diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
> index 0f090ece54..4a4445bdf5 100644
> --- a/target/sparc/cpu.c
> +++ b/target/sparc/cpu.c
> @@ -111,7 +111,6 @@ cpu_add_feat_as_prop(const char *typename, const char *name, const char *val)
>      prop->driver = typename;
>      prop->property = g_strdup(name);
>      prop->value = g_strdup(val);
> -    prop->errp = &error_fatal;
>      qdev_prop_register_global(prop);
>  }
>  
> diff --git a/vl.c b/vl.c
> index dfc100f51a..1b25cb3da2 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -2936,7 +2936,6 @@ static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
>      g->driver   = qemu_opt_get(opts, "driver");
>      g->property = qemu_opt_get(opts, "property");
>      g->value    = qemu_opt_get(opts, "value");
> -    g->errp = &error_fatal;
>      qdev_prop_register_global(g);
>      return 0;
>  }