From d5265ef4c16f784311c1d0803aa5c4d4631b9bfc Mon Sep 17 00:00:00 2001
From: Malte Voos <git@mal.tc>
Date: Thu, 4 Apr 2024 21:20:17 +0200
Subject: enable KVM for BLAZING FAST performance on a raspberry pi

---
 flake.nix | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/flake.nix b/flake.nix
index 2a92482..837cb0b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -59,17 +59,6 @@
         installFlags = [ "DESTDIR=${placeholder "out"}" ];
       };
 
-      ext4Rootfs = pkgs.runCommand "rm-rootfs.ext4"
-        {
-          nativeBuildInputs = with pkgs; [
-            (python3.withPackages (pypkgs: [ pypkgs.protobuf ]))
-            qemu
-            libguestfs-with-appliance
-          ];
-        } ''
-        python3 ${ddvk-stuff}/extractor/extractor.py ${updateArchive} $out
-      '';
-
       rootfs = pkgs.runCommand "rm-rootfs.qcow2"
         {
           nativeBuildInputs = with pkgs; [
@@ -125,13 +114,7 @@
         EOF
       '';
 
-      kernel = pkgs.pkgsCross.armv7l-hf-multiplatform.linux_5_4.override {
-        # structuredExtraConfig = with pkgs.lib.kernel; {
-        #   PCI = yes;
-        #   VIRTIO_PCI = yes;
-        #   PCI_HOST_GENERIC = yes;
-        # };
-      };
+      kernel = pkgs.pkgsCross.armv7l-hf-multiplatform.linux_5_4;
 
       server = pkgs.writeShellApplication {
         name = "reMder-server";
@@ -141,9 +124,10 @@
         text = ''
           qemu-img create -b ${rootfs} -F qcow2 -f qcow2 ./reMder.qcow2
 
-          # TODO switch to pci virtio devices? (uncomment kernel config above)
-          qemu-system-arm \
+          qemu-system-aarch64 \
+              -enable-kvm \
               -machine virt \
+              -cpu host,aarch64=off \
               -m 2048 \
               -kernel ${kernel}/zImage \
               -drive if=none,file=./reMder.qcow2,format=qcow2,id=hd \
@@ -193,7 +177,7 @@
     in
     {
       packages = {
-        inherit reMder fakefbdev ext4Rootfs;
+        inherit reMder fakefbdev;
       };
 
       defaultPackage = reMder;
-- 
cgit 1.4.1