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KVM: selftests: Don't set reserved bits for invalid Hyper-V hypercall number 

Bits 27 through 31 in Hyper-V hypercall 'control' are reserved (see
HV_HYPERCALL_RSVD0_MASK) but '0xdeadbeef' includes them. This causes
KVM to return HV_STATUS_INVALID_HYPERCALL_INPUT instead of the expected
HV_STATUS_INVALID_HYPERCALL_CODE.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/all/87fsgjol20.fsf@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Vitaly Kuznetsov 2022-09-22 10:39:41 +02:00 committed by Sean Christopherson
parent dfb45db43e
commit 31d3b871f5
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/kvm/x86_64/hyperv_features.c
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@ -508,7 +508,7 @@ static void guest_test_hcalls_access(void)
switch (stage) {
case 0:
feat->eax |= HV_MSR_HYPERCALL_AVAILABLE;
hcall->control = 0xdeadbeef;
hcall->control = 0xbeef;
hcall->expect = HV_STATUS_INVALID_HYPERCALL_CODE;
break;