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| author | Oliver Upton <oliver.upton@linux.dev> | 2023-04-04 17:40:44 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-04-05 13:07:41 +0200 |
| commit | fb88707dd39bd1d5ec4a058776de9ee99bcc7b72 (patch) | |
| tree | 69568a3ffa09c4257bbf3b1195573b84a52510f4 /include/kvm | |
| parent | KVM: arm64: Refactor hvc filtering to support different actions (diff) | |
| download | linux-fb88707dd39bd1d5ec4a058776de9ee99bcc7b72.tar.xz linux-fb88707dd39bd1d5ec4a058776de9ee99bcc7b72.zip | |
KVM: arm64: Use a maple tree to represent the SMCCC filter
Maple tree is an efficient B-tree implementation that is intended for
storing non-overlapping intervals. Such a data structure is a good fit
for the SMCCC filter as it is desirable to sparsely allocate the 32 bit
function ID space.
To that end, add a maple tree to kvm_arch and correctly init/teardown
along with the VM. Wire in a test against the hypercall filter for HVCs
which does nothing until the controls are exposed to userspace.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230404154050.2270077-8-oliver.upton@linux.dev
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_hypercalls.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/kvm/arm_hypercalls.h b/include/kvm/arm_hypercalls.h index 8f4e33bc43e8..fe6c31575b05 100644 --- a/include/kvm/arm_hypercalls.h +++ b/include/kvm/arm_hypercalls.h @@ -43,6 +43,7 @@ static inline void smccc_set_retval(struct kvm_vcpu *vcpu, struct kvm_one_reg; void kvm_arm_init_hypercalls(struct kvm *kvm); +void kvm_arm_teardown_hypercalls(struct kvm *kvm); int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu); int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |