[Qemu-devel] [PATCH] qemu: improve hugepage allocation failure message

[Marcelo Tosatti <mtosatti@redhat.com>]

Improve hugepage allocation failure message, indicating
whats happening to the user.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/exec.c b/exec.c
index 4722e521d4..439abedb98 100644
--- a/exec.c
+++ b/exec.c
@@ -1643,7 +1643,8 @@ static void *file_ram_alloc(RAMBlock *block,
                          block->flags & RAM_SHARED);
     if (area == MAP_FAILED) {
         error_setg_errno(errp, errno,
-                         "unable to map backing store for guest RAM");
+                         "unable to map backing store for guest RAM, "
+                         "falling back to malloc based RAM allocation");
         return NULL;
     }