diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2022-11-01 15:54:11 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-11-18 13:07:58 -0500 |
| commit | 998489245d8469c21f1517c4bbe192e0ef3c3374 (patch) | |
| tree | 4c70bcb1dad922e54c152720e170bca2a6318552 /tools/testing/selftests/kvm/include/x86_64 | |
| parent | caf4110fbaa89a20733facb062381e89961ce698 (diff) | |
| download | linux-next-998489245d8469c21f1517c4bbe192e0ef3c3374.tar.gz linux-next-998489245d8469c21f1517c4bbe192e0ef3c3374.zip | |
KVM: selftests: Hyper-V PV IPI selftest
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 <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20221101145426.251680-34-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86_64')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/hyperv.h | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h index 7ed8f4f5f7d8..c757e4001173 100644 --- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h +++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h @@ -9,6 +9,8 @@ #ifndef SELFTEST_KVM_HYPERV_H #define SELFTEST_KVM_HYPERV_H +#include "processor.h" + #define HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS 0x40000000 #define HYPERV_CPUID_INTERFACE 0x40000001 #define HYPERV_CPUID_VERSION 0x40000002 @@ -184,10 +186,15 @@ /* hypercall options */ #define HV_HYPERCALL_FAST_BIT BIT(16) +#define HV_HYPERCALL_VARHEAD_OFFSET 17 -static inline uint8_t hyperv_hypercall(u64 control, vm_vaddr_t input_address, - vm_vaddr_t output_address, - uint64_t *hv_status) +/* + * Issue a Hyper-V hypercall. Returns exception vector raised or 0, 'hv_status' + * is set to the hypercall status (if no exception occurred). + */ +static inline uint8_t __hyperv_hypercall(u64 control, vm_vaddr_t input_address, + vm_vaddr_t output_address, + uint64_t *hv_status) { uint64_t error_code; uint8_t vector; @@ -204,6 +211,28 @@ static inline uint8_t hyperv_hypercall(u64 control, vm_vaddr_t input_address, return vector; } +/* Issue a Hyper-V hypercall and assert that it succeeded. */ +static inline void hyperv_hypercall(u64 control, vm_vaddr_t input_address, + vm_vaddr_t output_address) +{ + uint64_t hv_status; + uint8_t vector; + + vector = __hyperv_hypercall(control, input_address, output_address, &hv_status); + + GUEST_ASSERT(!vector); + GUEST_ASSERT((hv_status & 0xffff) == 0); +} + +/* Write 'Fast' hypercall input 'data' to the first 'n_sse_regs' SSE regs */ +static inline void hyperv_write_xmm_input(void *data, int n_sse_regs) +{ + int i; + + for (i = 0; i < n_sse_regs; i++) + write_sse_reg(i, (sse128_t *)(data + sizeof(sse128_t) * i)); +} + /* Proper HV_X64_MSR_GUEST_OS_ID value */ #define HYPERV_LINUX_OS_ID ((u64)0x8100 << 48) |