[PATCH 0/4] kvm/arm64: Initial pKVM user ABI
Will Deacon
will at kernel.org
Thu Jun 3 11:33:43 PDT 2021
Hi folks,
These patches implement support for userspace to request a "Protected VM"
using KVM on arm64 when configured in Protected Mode (see the existing
kvm-arm.mode=protected command-line option).
The final patch documents the new ABI and its behaviour, so I won't
reproduce that here. Please go and have a look there instead!
Note that this series _doesn't_ implement the actual isolation of guest
memory; it's more about setting the groundwork for subsequent patches
and getting feedback on the user-facing side of things. The final patch
is marked RFC accordingly.
Cheers,
Will
Cc: Marc Zyngier <maz at kernel.org>
Cc: James Morse <james.morse at arm.com>
Cc: Alexandru Elisei <alexandru.elisei at arm.com>
Cc: Suzuki K Poulose <suzuki.poulose at arm.com>
Cc: Mark Rutland <mark.rutland at arm.com>
Cc: Christoffer Dall <christoffer.dall at arm.com>
Cc: Paolo Bonzini <pbonzini at redhat.com>
Cc: Fuad Tabba <tabba at google.com>
Cc: Quentin Perret <qperret at google.com>
Cc: Sean Christopherson <seanjc at google.com>
Cc: David Brazdil <dbrazdil at google.com>
Cc: kvm at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
--->8
Will Deacon (4):
KVM: arm64: Ignore 'kvm-arm.mode=protected' when using VHE
KVM: arm64: Extend comment in has_vhe()
KVM: arm64: Parse reserved-memory node for pkvm guest firmware region
KVM: arm64: Introduce KVM_CAP_ARM_PROTECTED_VM
.../admin-guide/kernel-parameters.txt | 1 -
Documentation/virt/kvm/api.rst | 69 ++++++++
arch/arm64/include/asm/kvm_host.h | 10 ++
arch/arm64/include/asm/virt.h | 3 +
arch/arm64/include/uapi/asm/kvm.h | 9 +
arch/arm64/kernel/cpufeature.c | 10 +-
arch/arm64/kvm/Makefile | 2 +-
arch/arm64/kvm/arm.c | 24 +--
arch/arm64/kvm/mmu.c | 3 +
arch/arm64/kvm/pkvm.c | 156 ++++++++++++++++++
include/uapi/linux/kvm.h | 1 +
11 files changed, 267 insertions(+), 21 deletions(-)
create mode 100644 arch/arm64/kvm/pkvm.c
--
2.32.0.rc0.204.g9fa02ecfa5-goog
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