Subject: [PATCH] vm: Pass -smp to QEMU to allow use of multiple cores.
From: Christopher Baines <[email-masked]>
To: [email-masked]
Date: Sat, 27 Apr 2019 21:43:25 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

* gnu/build/vm.scm (load-in-linux-vm): Pass (parallel-job-count) to QEMU with
-smp to allow using multiple cores.
---
 gnu/build/vm.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index 372cf63c68..ac99d6b1a3 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -145,6 +145,7 @@ the #:references-graphs parameter of 'derivation'."
     (_ #f))
 
   (apply invoke qemu "-nographic" "-no-reboot"
+         "-smp" (number->string (parallel-job-count))
          "-m" (number->string memory-size)
          "-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
          "-device" "virtio-rng-pci,rng=guixsd-vm-rng"
-- 
2.21.0