[PATCH v6 3/4] KVM: arm64: Report all the KVM/arm64-specific hypercalls
From: Shameer Kolothum <hidden>
Date: 2025-02-05 14:31:21
Also in:
kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
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 <redacted> --- 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..5cef2590ffdf 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_PTP, + ARM_SMCCC_KVM_FUNC_FEATURES); + /* Function numbers 2-63 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