kernel/tools/testing/selftests/kvm/include/x86_64/hyperv.h, branch linux-6.2.y

KVM: selftests: Allocate Hyper-V partition assist page

2022-11-21T11:41:59Z

In preparation to testing Hyper-V L2 TLB flush hypercalls, allocate so-called Partition assist page. Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-44-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Create a vendor independent helper to allocate Hyper-V specific test pages

2022-11-21T11:41:22Z

There's no need to pollute VMX and SVM code with Hyper-V specific stuff and allocate Hyper-V specific test pages for all test as only few really need them. Create a dedicated struct and an allocation helper. Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-43-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Move Hyper-V VP assist page enablement out of evmcs.h

2022-11-21T11:40:05Z

Hyper-V VP assist page is not eVMCS specific, it is also used for enlightened nSVM. Move the code to vendor neutral place. Reviewed-by: Maxim Levitsky Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-41-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Hyper-V PV TLB flush selftest

2022-11-21T11:40:01Z

Introduce a selftest for Hyper-V PV TLB flush hypercalls (HvFlushVirtualAddressSpace/HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressList/HvFlushVirtualAddressListEx). The test creates one 'sender' vCPU and two 'worker' vCPU which do busy loop reading from a certain GVA checking the observed value. Sender vCPU swaos the data page with another page filled with a different value. The expectation for workers is also altered. Without TLB flush on worker vCPUs, they may continue to observe old value. To guard against accidental TLB flushes for worker vCPUs the test is repeated 100 times. Hyper-V TLB flush hypercalls are tested in both 'normal' and 'XMM fast' modes. Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-38-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Hyper-V PV IPI selftest

2022-11-18T18:07:58Z

Introduce a selftest for Hyper-V PV IPI hypercalls (HvCallSendSyntheticClusterIpi, HvCallSendSyntheticClusterIpiEx). The test creates one 'sender' vCPU and two 'receiver' vCPU and then issues various combinations of send IPI hypercalls in both 'normal' and 'fast' (with XMM input where necessary) mode. Later, the test checks whether IPIs were delivered to the expected destination vCPU[s]. Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-34-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Move the function doing Hyper-V hypercall to a common header

2022-11-18T18:05:17Z

All Hyper-V specific tests issuing hypercalls need this. Reviewed-by: Maxim Levitsky Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-33-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Move HYPERV_LINUX_OS_ID definition to a common header

2022-11-18T17:59:21Z

HYPERV_LINUX_OS_ID needs to be written to HV_X64_MSR_GUEST_OS_ID by each Hyper-V specific selftest. Reviewed-by: Maxim Levitsky Reviewed-by: Sean Christopherson Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20221101145426.251680-32-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Test access to XMM fast hypercalls

2021-08-03T10:16:40Z

Check that #UD is raised if bit 16 is clear in HYPERV_CPUID_FEATURES.EDX and an 'XMM fast' hypercall is issued. Signed-off-by: Vitaly Kuznetsov Reviewed-by: Siddharth Chandrasekaran Signed-off-by: Paolo Bonzini Message-Id: <20210730122625.112848-5-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Introduce hyperv_features test

2021-06-17T17:09:46Z

The initial implementation of the test only tests that access to Hyper-V MSRs and hypercalls is in compliance with guest visible CPUID feature bits. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-31-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

KVM: selftests: move Hyper-V MSR definitions to hyperv.h

2021-06-17T17:09:45Z

These defines can be shared by multiple tests, move them to a dedicated header. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-29-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini