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-rw-r--r--gnu/build/vm.scm27
1 files changed, 21 insertions, 6 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index a5d9fefa62..6f920aec9e 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -82,6 +82,7 @@
make-disk-image?
single-file-output?
target-arm32?
+ target-aarch64?
(disk-image-size (* 100 (expt 2 20)))
(disk-image-format "qcow2")
(references-graphs '()))
@@ -97,16 +98,28 @@ access it via /dev/hda.
REFERENCES-GRAPHS can specify a list of reference-graph files as produced by
the #:references-graphs parameter of 'derivation'."
+ (define target-arm? (or target-arm32? target-aarch64?))
+
(define arch-specific-flags
`(;; On ARM, a machine has to be specified. Use "virt" machine to avoid
;; hardware limits imposed by other machines.
- ,@(if target-arm32? '("-M" "virt") '())
+ ,@(if target-arm?
+ '("-M" "virt")
+ '())
+
+ ;; On ARM32, if the kernel is built without LPAE support, ECAM conflicts
+ ;; with VIRT_PCIE_MMIO causing PCI devices not to show up. Disable
+ ;; explicitely highmem to fix it.
+ ;; See: https://bugs.launchpad.net/qemu/+bug/1790975.
+ ,@(if target-arm32?
+ '("-machine" "highmem=off")
+ '())
;; Only enable kvm if we see /dev/kvm exists. This allows users without
;; hardware virtualization to still use these commands. KVM support is
- ;; still buggy on some ARM32 boards. Do not use it even if available.
+ ;; still buggy on some ARM boards. Do not use it even if available.
,@(if (and (file-exists? "/dev/kvm")
- (not target-arm32?))
+ (not target-arm?))
'("-enable-kvm")
'())
@@ -117,11 +130,11 @@ the #:references-graphs parameter of 'derivation'."
;; The serial port name differs between emulated
;; architectures/machines.
" console="
- (if target-arm32? "ttyAMA0" "ttyS0"))
+ (if target-arm? "ttyAMA0" "ttyS0"))
;; NIC is not supported on ARM "virt" machine, so use a user mode
;; network stack instead.
- ,@(if target-arm32?
+ ,@(if target-arm?
'("-device" "virtio-net-pci,netdev=mynet"
"-netdev" "user,id=mynet")
'("-net" "nic,model=virtio"))))
@@ -145,7 +158,9 @@ the #:references-graphs parameter of 'derivation'."
(_ #f))
(apply invoke qemu "-nographic" "-no-reboot"
- "-smp" (number->string (parallel-job-count))
+ ;; CPU "max" behaves as "host" when KVM is enabled, and like a system
+ ;; CPU with the maximum possible feature set otherwise.
+ "-cpu" "max"
"-m" (number->string memory-size)
"-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
"-device" "virtio-rng-pci,rng=guixsd-vm-rng"