Increase VM memory when running qemu-memfs

Presumably because of the pre-loaded file system, the default RAM is insufficient when running kernelmemfs

Increase VM memory when running qemu-memfs
41f16c21 · Austin Clements · 8e541963 · 41f16c21
--- a/Makefile
+++ b/Makefile
@@ -216,7 +216,7 @@ qemu: fs.img xv6.img
 	$(QEMU) -serial mon:stdio $(QEMUOPTS)

 qemu-memfs: xv6memfs.img
-	$(QEMU) xv6memfs.img -smp $(CPUS)
+	$(QEMU) xv6memfs.img -smp $(CPUS) -m 256

 qemu-nox: fs.img xv6.img
 	$(QEMU) -nographic $(QEMUOPTS)