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| author |  Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
| 2022-05-02 00:07:35 +0200 |
|---|---|---|
| committer |  Paolo Bonzini <pbonzini@redhat.com>
| 2022-06-08 04:47:06 -0400 |
| commit | d8969871253a4704f007b307b2dd6232d1e40da8 (patch) | |
| tree | 46859778a7eb5959ddf4b68cf2639353bcb3ab55 /tools/testing/selftests/kvm/include/x86_64/svm_util.h | |
| parent | KVM: nSVM: Transparently handle L1 -> L2 NMI re-injection (diff) | |
| download | linux-d8969871253a4704f007b307b2dd6232d1e40da8.tar.gz linux-d8969871253a4704f007b307b2dd6232d1e40da8.tar.bz2 linux-d8969871253a4704f007b307b2dd6232d1e40da8.zip | |
KVM: selftests: nSVM: Add svm_nested_soft_inject_test
Add a KVM self-test that checks whether a nSVM L1 is able to successfully
inject a software interrupt, a soft exception and a NMI into its L2 guest.
In practice, this tests both the next_rip field consistency and
L1-injected event with intervening L0 VMEXIT during its delivery:
the first nested VMRUN (that's also trying to inject a software interrupt)
will immediately trigger a L0 NPF.
This L0 NPF will have zero in its CPU-returned next_rip field, which if
incorrectly reused by KVM will trigger a #PF when trying to return to
such address 0 from the interrupt handler.
For NMI injection this tests whether the L1 NMI state isn't getting
incorrectly mixed with the L2 NMI state if a L1 -> L2 NMI needs to be
re-injected.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
[sean: check exact L2 RIP on first soft interrupt]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-Id: <d5f3d56528558ad8e28a9f1e1e4187f5a1e6770a.1651440202.git.maciej.szmigiero@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86_64/svm_util.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/svm_util.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/svm_util.h b/tools/testing/selftests/kvm/include/x86_64/svm_util.h index a25aabd8f5e7..136ba6a5d027 100644 --- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h +++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h @@ -16,6 +16,8 @@ #define CPUID_SVM_BIT 2 #define CPUID_SVM BIT_ULL(CPUID_SVM_BIT) +#define SVM_EXIT_EXCP_BASE 0x040 +#define SVM_EXIT_HLT 0x078 #define SVM_EXIT_MSR 0x07c #define SVM_EXIT_VMMCALL 0x081 @@ -36,6 +38,16 @@ struct svm_test_data { uint64_t msr_gpa; }; +#define stgi() \ + __asm__ __volatile__( \ + "stgi\n" \ + ) + +#define clgi() \ + __asm__ __volatile__( \ + "clgi\n" \ + ) + struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva); void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp); void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa); |