diff options
author | Graham Christensen <graham@tumblr.com> | 2017-04-10 10:50:05 -0400 |
---|---|---|
committer | Graham Christensen <graham@tumblr.com> | 2017-04-24 15:23:46 -0400 |
commit | 4585fdb9d462d8f91ca819f7c0b398cfc47745db (patch) | |
tree | ec8f20f2747702bbbe994f740bd5e8c7cf020708 /nixos/modules/virtualisation/qemu-vm.nix | |
parent | 91ad6b35970b1378ac99de209b4ec48318704b07 (diff) |
qemu module: add virtualisation.cores option
QEMU can allow guests to access more than one host core at a time.
Previously, this had to be done via ad-hoc arguments:
virtualisation.qemu.options = ["-smp 12"];
Now you can simply specify:
virtualisation.cores = 12;
Diffstat (limited to 'nixos/modules/virtualisation/qemu-vm.nix')
-rw-r--r-- | nixos/modules/virtualisation/qemu-vm.nix | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/nixos/modules/virtualisation/qemu-vm.nix b/nixos/modules/virtualisation/qemu-vm.nix index 1933f11d1fff..c75edfcd8cf6 100644 --- a/nixos/modules/virtualisation/qemu-vm.nix +++ b/nixos/modules/virtualisation/qemu-vm.nix @@ -75,6 +75,7 @@ let exec ${qemu}/bin/qemu-kvm \ -name ${vmName} \ -m ${toString config.virtualisation.memorySize} \ + -smp ${toString config.virtualisation.cores} \ ${optionalString (pkgs.stdenv.system == "x86_64-linux") "-cpu kvm64"} \ ${concatStringsSep " " config.virtualisation.qemu.networkingOptions} \ -virtfs local,path=/nix/store,security_model=none,mount_tag=store \ @@ -244,6 +245,18 @@ in ''; }; + virtualisation.cores = + mkOption { + default = 1; + type = types.int; + description = + '' + Specify the number of cores the guest is permitted to use. + The number can be higher than the available cores on the + host system. + ''; + }; + virtualisation.pathsInNixDB = mkOption { default = []; |