[Qemu-devel] [PATCH V9 5/6] hostmem: add more information in error messages

Zhang Yi posted 6 patches 6 years, 9 months ago
Maintainers: Peter Crosthwaite <crosthwaite.peter@gmail.com>, Xiao Guangrong <xiaoguangrong.eric@gmail.com>, Igor Mammedov <imammedo@redhat.com>, Eduardo Habkost <ehabkost@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <rth@twiddle.net>
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[Qemu-devel] [PATCH V9 5/6] hostmem: add more information in error messages
Posted by Zhang Yi 6 years, 9 months ago
When there are multiple memory backends in use, including the object type
name and the property name in the error message can help users to locate
the error.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
---
 backends/hostmem-file.c | 6 ++++--
 backends/hostmem.c      | 8 +++++---
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index e640749..0dd7a90 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -82,7 +82,8 @@ static void set_mem_path(Object *o, const char *str, Error **errp)
     HostMemoryBackendFile *fb = MEMORY_BACKEND_FILE(o);
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(errp, "cannot change property value");
+        error_setg(errp, "cannot change property 'mem-path' of %s",
+                   object_get_typename(o));
         return;
     }
     g_free(fb->mem_path);
@@ -120,7 +121,8 @@ static void file_memory_backend_set_align(Object *o, Visitor *v,
     uint64_t val;
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(&local_err, "cannot change property value");
+        error_setg(&local_err, "cannot change property '%s' of %s",
+                   name, object_get_typename(o));
         goto out;
     }
 
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 1a89342..e2bcf9f 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -47,7 +47,8 @@ host_memory_backend_set_size(Object *obj, Visitor *v, const char *name,
     uint64_t value;
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(&local_err, "cannot change property value");
+        error_setg(&local_err, "cannot change property %s of %s ",
+                   name, object_get_typename(obj));
         goto out;
     }
 
@@ -56,8 +57,9 @@ host_memory_backend_set_size(Object *obj, Visitor *v, const char *name,
         goto out;
     }
     if (!value) {
-        error_setg(&local_err, "Property '%s.%s' doesn't take value '%"
-                   PRIu64 "'", object_get_typename(obj), name, value);
+        error_setg(&local_err,
+                   "property '%s' of %s doesn't take value '%" PRIu64 "'",
+                   name, object_get_typename(obj), value);
         goto out;
     }
     backend->size = value;
-- 
2.7.4


Re: [Qemu-devel] [PATCH V9 5/6] hostmem: add more information in error messages
Posted by Stefano Garzarella 6 years, 9 months ago
On Wed, Jan 16, 2019 at 9:17 AM Zhang Yi <yi.z.zhang@linux.intel.com> wrote:
>
> When there are multiple memory backends in use, including the object type
> name and the property name in the error message can help users to locate
> the error.
>
> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
> Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>  backends/hostmem-file.c | 6 ++++--
>  backends/hostmem.c      | 8 +++++---
>  2 files changed, 9 insertions(+), 5 deletions(-)
>

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>