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-rw-r--r--gnu/build/vm.scm8
1 files changed, 8 insertions, 0 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index a5d9fefa62..b85398ed24 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -102,6 +102,14 @@ the #:references-graphs parameter of 'derivation'."
;; hardware limits imposed by other machines.
,@(if target-arm32? '("-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.