tree 75f16b7876f0af40749ff8d1023500dd66d0ae6b
parent 5fb9b5b9cba9bcf6743a4f884e23152bc9bf4e5a
author Luiz Capitulino <lcapitulino@redhat.com> 1410198605 -0400
committer Luiz Capitulino <lcapitulino@redhat.com> 1410535341 -0400

exec: file_ram_alloc(): print error when prealloc fails

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>