[PATCH v5 3/4] KVM: arm64: Report all the KVM/arm64-specific hypercalls
Shameer Kolothum
shameerali.kolothum.thodi at huawei.com
Fri Jan 24 07:17:31 PST 2025
Currently ARM_SMCCC_VENDOR_HYP_KVM_FEATURES_FUNC_ID returns the
bitmap corresponding to KVM_REG_ARM_VENDOR_HYP_BMAP and it only
returns _KVM_FEATURES_FUNC_ID and _KVM_PTP_FUNC_ID. Change that
to return all the KVM/arm64-specific hypercalls exposed by
KVM/arm64 to guest operating systems.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi at huawei.com>
---
arch/arm64/kvm/hypercalls.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/hypercalls.c b/arch/arm64/kvm/hypercalls.c
index 27ce4cb44904..6132cb542200 100644
--- a/arch/arm64/kvm/hypercalls.c
+++ b/arch/arm64/kvm/hypercalls.c
@@ -359,7 +359,11 @@ int kvm_smccc_call_handler(struct kvm_vcpu *vcpu)
val[3] = ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_3;
break;
case ARM_SMCCC_VENDOR_HYP_KVM_FEATURES_FUNC_ID:
- val[0] = smccc_feat->vendor_hyp_bmap;
+ val[0] = GENMASK(ARM_SMCCC_KVM_FUNC_MMIO_GUARD,
+ ARM_SMCCC_KVM_FUNC_FEATURES);
+ /* Function numbers 8-63 are reserved for pKVM for now */
+ val[2] = GENMASK((ARM_SMCCC_KVM_FUNC_DISCOVER_IMPL_CPUS - 64),
+ (ARM_SMCCC_KVM_FUNC_DISCOVER_IMPL_VER - 64));
break;
case ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID:
kvm_ptp_get_time(vcpu, val);
--
2.47.0
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