From c4a46627e5a846e59f0097e3196f142eb6142f4f Mon Sep 17 00:00:00 2001 From: Vipin Sharma Date: Mon, 12 Dec 2022 10:37:17 -0800 Subject: [PATCH] KVM: selftests: Test Hyper-V extended hypercall enablement Test Hyper-V extended hypercall, HV_EXT_CALL_QUERY_CAPABILITIES (0x8001), access denied and invalid parameter cases. Access is denied if CPUID.0x40000003.EBX BIT(20) is not set. Invalid parameter if call has fast bit set. Signed-off-by: Vipin Sharma Link: https://lore.kernel.org/r/20221212183720.4062037-11-vipinsh@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/include/x86_64/hyperv.h | 5 +++++ tools/testing/selftests/kvm/x86_64/hyperv_features.c | 9 +++++++++ 2 files changed, 14 insertions(+) diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h index 28eb990..fa65b90 100644 --- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h +++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h @@ -137,6 +137,8 @@ KVM_X86_CPU_FEATURE(HYPERV_CPUID_FEATURES, 0, EBX, 11) #define HV_CPU_MANAGEMENT \ KVM_X86_CPU_FEATURE(HYPERV_CPUID_FEATURES, 0, EBX, 12) +#define HV_ENABLE_EXTENDED_HYPERCALLS \ + KVM_X86_CPU_FEATURE(HYPERV_CPUID_FEATURES, 0, EBX, 20) #define HV_ISOLATION \ KVM_X86_CPU_FEATURE(HYPERV_CPUID_FEATURES, 0, EBX, 22) @@ -213,6 +215,9 @@ #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0 +/* Extended hypercalls */ +#define HV_EXT_CALL_QUERY_CAPABILITIES 0x8001 + #define HV_FLUSH_ALL_PROCESSORS BIT(0) #define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES BIT(1) #define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY BIT(2) diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c index 258267d..c5e3b39 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c @@ -649,6 +649,15 @@ static void guest_test_hcalls_access(void) hcall->expect = HV_STATUS_SUCCESS; break; case 19: + hcall->control = HV_EXT_CALL_QUERY_CAPABILITIES; + hcall->expect = HV_STATUS_ACCESS_DENIED; + break; + case 20: + vcpu_set_cpuid_feature(vcpu, HV_ENABLE_EXTENDED_HYPERCALLS); + hcall->control = HV_EXT_CALL_QUERY_CAPABILITIES | HV_HYPERCALL_FAST_BIT; + hcall->expect = HV_STATUS_INVALID_PARAMETER; + break; + case 21: kvm_vm_free(vm); return; } -- 2.7.4