[PATCH 18/22] host/start-vm: increase memory size to 512M

[Alyssa Ross <hi@alyssa.is>]

To be able to run Nix builds inside a VM, we need more memory.
Eventually, of course, we will want to not have a single static memory
size for all VMs, but this is fine for now as I have tested all that I
can still run all default VMs, plus one running a Nix build, in the
test VM with 2G of memory with this change.

Signed-off-by: Alyssa Ross <hi@alyssa.is>
---
 host/start-vm/lib.rs                    | 2 +-
 host/start-vm/tests/vm_command-basic.rs | 2 +-
 img/app/Makefile                        | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/host/start-vm/lib.rs b/host/start-vm/lib.rs
index f167efe..1946c65 100644
--- a/host/start-vm/lib.rs
+++ b/host/start-vm/lib.rs
@@ -50,7 +50,7 @@ pub fn vm_command(dir: PathBuf, root: &Root) -> Result<Command, String> {
     command.arg("cloud-hypervisor");
     command.args(&["--api-socket", "env/cloud-hypervisor.sock"]);
     command.args(&["--cmdline", "console=ttyS0 root=PARTLABEL=root"]);
-    command.args(&["--memory", "size=128M,shared=on"]);
+    command.args(&["--memory", "size=512M,shared=on"]);
     command.args(&["--console", "pty"]);
 
     command.arg("--kernel");
diff --git a/host/start-vm/tests/vm_command-basic.rs b/host/start-vm/tests/vm_command-basic.rs
index 234f6e3..311c2af 100644
--- a/host/start-vm/tests/vm_command-basic.rs
+++ b/host/start-vm/tests/vm_command-basic.rs
@@ -39,7 +39,7 @@ fn main() -> std::io::Result<()> {
         OsStr::new("--cmdline"),
         OsStr::new("console=ttyS0 root=PARTLABEL=root"),
         OsStr::new("--memory"),
-        OsStr::new("size=128M,shared=on"),
+        OsStr::new("size=512M,shared=on"),
         OsStr::new("--console"),
         OsStr::new("pty"),
         OsStr::new("--kernel"),
diff --git a/img/app/Makefile b/img/app/Makefile
index 259e819..cb3af71 100644
--- a/img/app/Makefile
+++ b/img/app/Makefile
@@ -106,7 +106,7 @@ start-virtiofsd:
 .PHONY: start-virtiofsd
 
 run-qemu: build/host/appvm/blk/root.img start-virtiofsd
-	$(QEMU_KVM) -m 128 -cpu host -machine q35,kernel=$(KERNEL) -vga none \
+	$(QEMU_KVM) -m 512 -cpu host -machine q35,kernel=$(KERNEL) -vga none \
 	  -drive file=build/host/appvm/blk/root.img,if=virtio,format=raw,readonly=on \
 	  -drive file=$(RUN_IMG),if=virtio,format=raw,readonly=on \
 	  -append "console=ttyS0 root=PARTLABEL=root" \
@@ -114,7 +114,7 @@ run-qemu: build/host/appvm/blk/root.img start-virtiofsd
 	  -device virtio-net,netdev=net0,mac=0A:B3:EC:00:00:00 \
 	  -chardev socket,id=virtiofsd,path=virtiofsd.sock \
 	  -device vhost-user-fs-pci,chardev=virtiofsd,tag=virtiofs0 \
-	  -object memory-backend-memfd,id=mem,size=128M,share=on \
+	  -object memory-backend-memfd,id=mem,size=512M,share=on \
 	  -numa node,memdev=mem \
 	  -chardev vc,id=virtiocon0 \
 	  -device virtio-serial-pci \
@@ -124,7 +124,7 @@ run-qemu: build/host/appvm/blk/root.img start-virtiofsd
 run-cloud-hypervisor: build/host/appvm/blk/root.img start-virtiofsd
 	$(CLOUD_HYPERVISOR) \
 	    --api-socket path=vmm.sock \
-	    --memory size=128M,shared=on \
+	    --memory size=512M,shared=on \
 	    --disk path=build/host/appvm/blk/root.img,readonly=on \
 	           path=$(RUN_IMG),readonly=on \
 	    --net tap=tap0,mac=0A:B3:EC:00:00:00 \
-- 
2.37.1