From: Will Deacon <will@kernel.org>
To: kvmarm@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Oliver Upton <oupton@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Quentin Perret <qperret@google.com>,
Fuad Tabba <tabba@google.com>,
Vincent Donnefort <vdonnefort@google.com>,
Mostafa Saleh <smostafa@google.com>,
Alexandru Elisei <alexandru.elisei@arm.com>
Subject: [PATCH v4 38/38] drivers/virt: pkvm: Add Kconfig dependency on DMA_RESTRICTED_POOL
Date: Fri, 27 Mar 2026 14:00:37 +0000 [thread overview]
Message-ID: <20260327140039.21228-39-will@kernel.org> (raw)
In-Reply-To: <20260327140039.21228-1-will@kernel.org>
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
next prev parent reply other threads:[~2026-03-27 14:04 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-27 13:59 [PATCH v4 00/38] KVM: arm64: Add support for protected guest memory with pKVM Will Deacon
2026-03-27 14:00 ` [PATCH v4 01/38] KVM: arm64: Remove unused PKVM_ID_FFA definition Will Deacon
2026-03-27 14:00 ` [PATCH v4 02/38] KVM: arm64: Don't leak stage-2 page-table if VM fails to init under pKVM Will Deacon
2026-03-27 14:00 ` [PATCH v4 03/38] KVM: arm64: Move handle check into pkvm_pgtable_stage2_destroy_range() Will Deacon
2026-03-27 14:00 ` [PATCH v4 04/38] KVM: arm64: Rename __pkvm_pgtable_stage2_unmap() Will Deacon
2026-03-27 14:00 ` [PATCH v4 05/38] KVM: arm64: Don't advertise unsupported features for protected guests Will Deacon
2026-03-27 14:00 ` [PATCH v4 06/38] KVM: arm64: Expose self-hosted debug regs as RAZ/WI " Will Deacon
2026-03-27 14:00 ` [PATCH v4 07/38] KVM: arm64: Remove is_protected_kvm_enabled() checks from hypercalls Will Deacon
2026-03-27 14:00 ` [PATCH v4 08/38] KVM: arm64: Ignore MMU notifier callbacks for protected VMs Will Deacon
2026-03-27 14:00 ` [PATCH v4 09/38] KVM: arm64: Prevent unsupported memslot operations on " Will Deacon
2026-03-27 14:00 ` [PATCH v4 10/38] KVM: arm64: Ignore -EAGAIN when mapping in pages for the pKVM host Will Deacon
2026-03-27 14:00 ` [PATCH v4 11/38] KVM: arm64: Split teardown hypercall into two phases Will Deacon
2026-03-27 14:00 ` [PATCH v4 12/38] KVM: arm64: Introduce __pkvm_host_donate_guest() Will Deacon
2026-03-27 14:00 ` [PATCH v4 13/38] KVM: arm64: Hook up donation hypercall to pkvm_pgtable_stage2_map() Will Deacon
2026-03-27 14:00 ` [PATCH v4 14/38] KVM: arm64: Handle aborts from protected VMs Will Deacon
2026-03-27 14:00 ` [PATCH v4 15/38] KVM: arm64: Introduce __pkvm_reclaim_dying_guest_page() Will Deacon
2026-03-27 14:00 ` [PATCH v4 16/38] KVM: arm64: Hook up reclaim hypercall to pkvm_pgtable_stage2_destroy() Will Deacon
2026-03-27 14:00 ` [PATCH v4 17/38] KVM: arm64: Factor out pKVM host exception injection logic Will Deacon
2026-03-27 14:00 ` [PATCH v4 18/38] KVM: arm64: Support translation faults in inject_host_exception() Will Deacon
2026-03-27 14:00 ` [PATCH v4 19/38] KVM: arm64: Inject SIGSEGV on illegal accesses Will Deacon
2026-03-27 14:00 ` [PATCH v4 20/38] KVM: arm64: Avoid pointless annotation when mapping host-owned pages Will Deacon
2026-03-27 14:00 ` [PATCH v4 21/38] KVM: arm64: Generalise kvm_pgtable_stage2_set_owner() Will Deacon
2026-03-27 14:00 ` [PATCH v4 22/38] KVM: arm64: Introduce host_stage2_set_owner_metadata_locked() Will Deacon
2026-03-27 14:00 ` [PATCH v4 23/38] KVM: arm64: Change 'pkvm_handle_t' to u16 Will Deacon
2026-03-27 14:00 ` [PATCH v4 24/38] KVM: arm64: Annotate guest donations with handle and gfn in host stage-2 Will Deacon
2026-03-27 14:00 ` [PATCH v4 25/38] KVM: arm64: Introduce hypercall to force reclaim of a protected page Will Deacon
2026-03-27 14:00 ` [PATCH v4 26/38] KVM: arm64: Reclaim faulting page from pKVM in spurious fault handler Will Deacon
2026-03-27 14:00 ` [PATCH v4 27/38] KVM: arm64: Return -EFAULT from VCPU_RUN on access to a poisoned pte Will Deacon
2026-03-27 14:00 ` [PATCH v4 28/38] KVM: arm64: Add hvc handler at EL2 for hypercalls from protected VMs Will Deacon
2026-03-27 14:00 ` [PATCH v4 29/38] KVM: arm64: Implement the MEM_SHARE hypercall for " Will Deacon
2026-03-27 14:00 ` [PATCH v4 30/38] KVM: arm64: Implement the MEM_UNSHARE " Will Deacon
2026-03-27 14:00 ` [PATCH v4 31/38] KVM: arm64: Allow userspace to create protected VMs when pKVM is enabled Will Deacon
2026-03-27 14:00 ` [PATCH v4 32/38] KVM: arm64: Add some initial documentation for pKVM Will Deacon
2026-03-27 14:00 ` [PATCH v4 33/38] KVM: arm64: Extend pKVM page ownership selftests to cover guest donation Will Deacon
2026-03-27 14:00 ` [PATCH v4 34/38] KVM: arm64: Register 'selftest_vm' in the VM table Will Deacon
2026-03-27 14:00 ` [PATCH v4 35/38] KVM: arm64: Extend pKVM page ownership selftests to cover forced reclaim Will Deacon
2026-03-27 14:00 ` [PATCH v4 36/38] KVM: arm64: Extend pKVM page ownership selftests to cover guest hvcs Will Deacon
2026-03-27 14:00 ` [PATCH v4 37/38] KVM: arm64: Rename PKVM_PAGE_STATE_MASK Will Deacon
2026-03-27 14:00 ` Will Deacon [this message]
2026-03-27 18:13 ` [PATCH v4 00/38] KVM: arm64: Add support for protected guest memory with pKVM Will Deacon
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