[PATCH 02/12] dump: Improve error message when target doesn't support memory dump

[Markus Armbruster <armbru@redhat.com>]

The QERR_ macros are leftovers from the days of "rich" error objects.
We've been trying to reduce their remaining use.

Get rid of a use of QERR_UNSUPPORTED, and improve the rather vague
error message

    (qemu) dump-guest-memory mumble
    Error: this feature or command is not currently supported

to

    Error: guest memory dumping is not supported on this target

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 dump/dump.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dump/dump.c b/dump/dump.c
index 279b07f09b..80620da40d 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -1854,7 +1854,8 @@ static void dump_init(DumpState *s, int fd, bool has_format,
      */
     ret = cpu_get_dump_info(&s->dump_info, &s->guest_phys_blocks);
     if (ret < 0) {
-        error_setg(errp, QERR_UNSUPPORTED);
+        error_setg(errp,
+                   "guest memory dumping is not supported on this target");
         goto cleanup;
     }
 
-- 
2.39.0