This patch is taken from debian. 128M is too less sometimes if distro
with lot of packages is booted so this patch raises the default to 384M

It has not been applied to upstream qemu

Khem Raj <raj.khem@gmail.com>

Upstream-Status: Pending

Index: qemu-0.14.0/vl.c
===================================================================
--- qemu-0.14.0.orig/vl.c
+++ qemu-0.14.0/vl.c
@@ -168,7 +168,7 @@ int main(int argc, char **argv)
 //#define DEBUG_NET
 //#define DEBUG_SLIRP
 
-#define DEFAULT_RAM_SIZE 128
+#define DEFAULT_RAM_SIZE 384
 
 #define MAX_VIRTIO_CONSOLES 1