QEMU: Difference between revisions

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== Setup ==

To install the main QEMU program system-wide, add the following to your <code>configuration.nix</code>:<syntaxhighlight lang=nix>

environment = {

systemPackages = [ pkgs.qemu ];

};

</syntaxhighlight>

=== Quick EMU ===

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== Configuration ==

=== ~~Booting~~ UEFI ===

=== UEFI firmware support ===

To ~~boot~~ UEFI ~~systems using QEMU~~, ~~the UEFI firmware replacing the BIOS implementation needs~~ to ~~be provided while starting QEMU~~.

To enable UEFI firmware support in Virt-Manager, Libvirt, Gnome-Boxes etc. add following snippet to your system configuration and apply it<syntaxhighlight lang="nix">

systemd.tmpfiles.rules = [ "L+ /var/lib/qemu/firmware - - - - ${pkgs.qemu}/share/qemu/firmware" ];

~~The following installs a script, that always starts QEMU with OVMF~~ firmware ~~implementing UEFI support~~.

</syntaxhighlight>

=== Run binaries of different architecture ===

~~environment = {~~

Following configuration will enable the emulation of different architectures. For example to run aarch64 and riscv64 binaries on an native x86_64 host, add following part to your system configuration, apply it and reboot your system.<syntaxhighlight lang="nix">

~~systemPackages~~ = [

boot.binfmt.emulatedSystems = [

~~(pkgs.writeShellScriptBin~~ "~~qemu~~-~~system-x86_64-uefi~~" ''

"aarch64-linux"

~~qemu-system-x86_64 \~~

"riscv64-linux"

-~~bios ${pkgs.OVMF.fd}/FV/OVMF.fd \~~

];

~~"$@~~"

~~'')~~

];

};

</syntaxhighlight>

qcow-efi images generated from [https://github.com/nix-community/nixos-generators nixos-generators] require more RAM than the default 128MB. Failing to provide enough RAM results in grub reporting "error: start_image() returned 0x800000000000009." or systemd-boot reporting "Failed to execute NixOS: Out of resources".

== Tips and tricks ==

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}

</syntaxhighlight>

</syntaxhighlight>Alternatively a different iso file can be specified in the drive-parameter, for example for Ubuntu Server ARM64.

[[Category:Virtualization]]

@@ Line 2: / Line 2: @@
 == Setup ==
+To install the main QEMU program system-wide, add the following to your <code>configuration.nix</code>:<syntaxhighlight lang=nix>
-<syntaxhighlight lang=nix>
    environment = {
      systemPackages = [ pkgs.qemu ];
    };
 </syntaxhighlight>
+{{Evaluate}}
 === Quick EMU ===
@@ Line 22: / Line 23: @@
 == Configuration ==
-=== Booting UEFI ===
+=== UEFI firmware support ===
-To boot UEFI systems using QEMU, the UEFI firmware replacing the BIOS implementation needs to be provided while starting QEMU.
+To enable UEFI firmware support in Virt-Manager, Libvirt, Gnome-Boxes etc. add following snippet to your system configuration and apply it<syntaxhighlight lang="nix">
+systemd.tmpfiles.rules = [ "L+ /var/lib/qemu/firmware - - - - ${pkgs.qemu}/share/qemu/firmware" ];
-The following installs a script, that always starts QEMU with OVMF firmware implementing UEFI support.
+</syntaxhighlight>
-<syntaxhighlight lang=nix>
+=== Run binaries of different architecture ===
- environment = {
+Following configuration will enable the emulation of different architectures. For example to run aarch64 and riscv64 binaries on an native x86_64 host, add following part to your system configuration, apply it and reboot your system.<syntaxhighlight lang="nix">
-   systemPackages = [
+boot.binfmt.emulatedSystems = [
-     (pkgs.writeShellScriptBin "qemu-system-x86_64-uefi" ''
+  "aarch64-linux"
-       qemu-system-x86_64 \
+  "riscv64-linux"
-         -bios ${pkgs.OVMF.fd}/FV/OVMF.fd \
+];
-         "$@"
-     '')
-   ];
- };
 </syntaxhighlight>
-qcow-efi images generated from [https://github.com/nix-community/nixos-generators nixos-generators] require more RAM than the default 128MB.  Failing to provide enough RAM results in grub reporting "error: start_image() returned 0x800000000000009." or systemd-boot reporting "Failed to execute NixOS: Out of resources".
 == Tips and tricks ==
@@ Line 80: / Line 75: @@
 }
-</syntaxhighlight>
+</syntaxhighlight>Alternatively a different iso file can be specified in the drive-parameter, for example for Ubuntu Server ARM64.
 [[Category:Virtualization]]