From 61135967fa76d37883d90ccccc5a1cb73e90b94d Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 30 Mar 2026 15:48:39 +0100 Subject: [PATCH] drivers/virt: pkvm: Add Kconfig dependency on DMA_RESTRICTED_POOL 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 Signed-off-by: Will Deacon Link: https://patch.msgid.link/20260330144841.26181-39-will@kernel.org Signed-off-by: Marc Zyngier --- 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