[PULL,2/2] exec: file_ram_alloc(): print error when prealloc fails
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Message ID 1410553584-25048-3-git-send-email-lcapitulino@redhat.com
State New
Headers show

Commit Message

Luiz Capitulino Sept. 12, 2014, 8:26 p.m. UTC
If memory allocation fails when using the -mem-prealloc command-line
option, QEMU exits without printing any error information to
the user:

 # qemu [...] -m 1G -mem-prealloc -mem-path /dev/hugepages
 # echo $?
 1

This commit adds an error message, so that we print instead:

 # qemu [...] -m 1G -mem-prealloc -mem-path /dev/hugepages
 qemu: unable to map backing store for hugepages: Cannot allocate memory

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 exec.c | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/exec.c b/exec.c
index 7dddcc8..cb73d16 100644
--- a/exec.c
+++ b/exec.c
@@ -1130,6 +1130,7 @@  static void *file_ram_alloc(RAMBlock *block,
 
 error:
     if (mem_prealloc) {
+        error_report("%s\n", error_get_pretty(*errp));
         exit(1);
     }
     return NULL;