diff options
| author | Will Deacon <will@kernel.org> | 2022-11-10 19:02:59 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-11 17:19:35 +0000 |
| commit | be66e67f175096f283c9d5614c4991fc9e7ed975 (patch) | |
| tree | fa477573896bc6eb967252485754a38dc695c8fc /arch/arm64/kvm/hyp/include | |
| parent | 169cd0f8238f2598b85d2db2e15828e8f8da18e5 (diff) | |
KVM: arm64: Use the pKVM hyp vCPU structure in handle___kvm_vcpu_run()
As a stepping stone towards deprivileging the host's access to the
guest's vCPU structures, introduce some naive flush/sync routines to
copy most of the host vCPU into the hyp vCPU on vCPU run and back
again on return to EL1.
This allows us to run using the pKVM hyp structures when KVM is
initialised in protected mode.
Tested-by: Vincent Donnefort <vdonnefort@google.com>
Co-developed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221110190259.26861-27-will@kernel.org
Diffstat (limited to 'arch/arm64/kvm/hyp/include')
| -rw-r--r-- | arch/arm64/kvm/hyp/include/nvhe/pkvm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/include/nvhe/pkvm.h b/arch/arm64/kvm/hyp/include/nvhe/pkvm.h index d14dfbcb7da1..82b3d62538a6 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/pkvm.h +++ b/arch/arm64/kvm/hyp/include/nvhe/pkvm.h @@ -61,4 +61,8 @@ int __pkvm_init_vcpu(pkvm_handle_t handle, struct kvm_vcpu *host_vcpu, unsigned long vcpu_hva); int __pkvm_teardown_vm(pkvm_handle_t handle); +struct pkvm_hyp_vcpu *pkvm_load_hyp_vcpu(pkvm_handle_t handle, + unsigned int vcpu_idx); +void pkvm_put_hyp_vcpu(struct pkvm_hyp_vcpu *hyp_vcpu); + #endif /* __ARM64_KVM_NVHE_PKVM_H__ */ |