[PATCH v4 38/38] drivers/virt: pkvm: Add Kconfig dependency on DMA_RESTRICTED_POOL

Will Deacon
2026-03-27T14:02:56Z

pKVM guests practically rely on CONFIG_DMA_RESTRICTED_POOL=y in order
to establish shared memory regions with the host for virtio buffers.

Make CONFIG_ARM_PKVM_GUEST depend on CONFIG_DMA_RESTRICTED_POOL to avoid
the inevitable segmentation faults experience if you have the former but
not the latter.

Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
---
drivers/virt/coco/pkvm-guest/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virt/coco/pkvm-guest/Kconfig b/drivers/virt/coco/pkvm-guest/Kconfig
index d2f344f1f98f..928b8e1668cc 100644
--- a/drivers/virt/coco/pkvm-guest/Kconfig
+++ b/drivers/virt/coco/pkvm-guest/Kconfig
@@ -1,6 +1,6 @@
config ARM_PKVM_GUEST
bool "Arm pKVM protected guest driver"
- depends on ARM64
+ depends on ARM64 && DMA_RESTRICTED_POOL
help
Protected guests running under the pKVM hypervisor on arm64
are isolated from the host and must issue hypercalls to enable
--
2.53.0.1018.g2bb0e51243-goog