69c05a2378
mem_str will never be an empty string, because qemu_opt_get_size() fails if it encounters one: $ ./qemu-system-x86_64 -m size= qemu-system-x86_64: -m size=: Parameter size expects a non-negative number below 2^64 Optional suffix k, M, G, T, P or E means kilo-, mega-, giga-, tera-, peta- and exabytes, respectively. Suggested-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>