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From: Vipin Sharma <vipinsh@google.com>
To: seanjc@google.com, pbonzini@redhat.com, vkuznets@redhat.com,
	dmatlack@google.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Vipin Sharma <vipinsh@google.com>
Subject: [Patch v3 10/13] KVM: selftests: Test Hyper-V extended hypercall enablement
Date: Mon,  5 Dec 2022 11:14:27 -0800	[thread overview]
Message-ID: <20221205191430.2455108-11-vipinsh@google.com> (raw)
In-Reply-To: <20221205191430.2455108-1-vipinsh@google.com>

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 <vipinsh@google.com>
---
 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 28eb99046475..fa65b908b13e 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 258267df8e2a..c5e3b39edd07 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;
 		}
-- 
2.39.0.rc0.267.gcb52ba06e7-goog


  parent reply	other threads:[~2022-12-05 19:16 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-05 19:14 [Patch v3 00/13] Add Hyper-v extended hypercall support in KVM Vipin Sharma
2022-12-05 19:14 ` [Patch v3 01/13] x86/hyperv: Add HV_EXPOSE_INVARIANT_TSC define Vipin Sharma
2022-12-05 19:14 ` [Patch v3 02/13] KVM: x86: Add a KVM-only leaf for CPUID_8000_0007_EDX Vipin Sharma
2022-12-05 19:14 ` [Patch v3 03/13] KVM: x86: Hyper-V invariant TSC control Vipin Sharma
2022-12-05 19:14 ` [Patch v3 04/13] KVM: selftests: Rename 'msr->available' to 'msr->fault_exepected' in hyperv_features test Vipin Sharma
2022-12-05 19:14 ` [Patch v3 05/13] KVM: selftests: Convert hyperv_features test to using KVM_X86_CPU_FEATURE() Vipin Sharma
2022-12-05 19:14 ` [Patch v3 06/13] KVM: selftests: Test that values written to Hyper-V MSRs are preserved Vipin Sharma
2022-12-05 19:14 ` [Patch v3 07/13] KVM: selftests: Test Hyper-V invariant TSC control Vipin Sharma
2022-12-05 19:14 ` [Patch v3 08/13] KVM: x86: hyper-v: Use common code for hypercall userspace exit Vipin Sharma
2022-12-05 19:14 ` [Patch v3 09/13] KVM: x86: hyper-v: Add extended hypercall support in Hyper-v Vipin Sharma
2022-12-05 19:14 ` Vipin Sharma [this message]
2022-12-05 19:14 ` [Patch v3 11/13] KVM: selftests: Replace hardcoded Linux OS id with HYPERV_LINUX_OS_ID Vipin Sharma
2022-12-05 19:14 ` [Patch v3 12/13] KVM: selftests: Make vCPU exit reason test assertion common Vipin Sharma
2022-12-09 21:50   ` David Matlack
2022-12-10  1:48     ` Sean Christopherson
2022-12-12 16:00       ` Vipin Sharma
2022-12-05 19:14 ` [Patch v3 13/13] KVM: selftests: Test Hyper-V extended hypercall exit to userspace Vipin Sharma
2022-12-09 22:05   ` David Matlack
2022-12-10  1:39     ` Sean Christopherson
2022-12-10 16:57       ` David Matlack

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