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Date: Tue, 9 Jan 2018 17:37:46 -0200
From: Marcelo Tosatti <mtosatti@redhat.com>
Message-ID: <20180109193745.GA18506@amt.cnet>
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Subject: [Qemu-devel] [PATCH] qemu: improve hugepage allocation failure
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To: qemu-devel <qemu-devel@nongnu.org>
Cc: Paolo Bonzini <pbonzini@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;
     }