[PATCH v9 00/11] KVM: selftests: Add SEV and SEV-ES smoke tests
Sean Christopherson
seanjc at google.com
Thu Feb 22 16:42:47 PST 2024
Add basic SEV and SEV-ES smoke tests. Unlike the intra-host migration tests,
this one actually runs a small chunk of code in the guest.
Unless anyone strongly objects to the quick and dirty approach I've taken for
SEV-ES, I'll get all of this queued for 6.9 soon-ish.
As for _why_ I added the quick-and-dirty SEV-ES testcase, I have a series to
cleanup __svm_sev_es_vcpu_run(), and found out that apparently I have a version
of OVMF that doesn't quite have to the right <something> for SEV-ES, and so I
could even get a "real" VM to reach KVM_RUN. I assumed (correctly, yay!) that
hacking together a selftest would be faster than figuring out what firmware
magic I am missing.
v9:
- Drop is_kvm_sev_supported() and rely purely on KVM capabilities.
- Check X86_FEATURE_SEV to ensure SEV is actually enabled.
- Collect tags. [Carlos, Itaru]
v8:
- https://lore.kernel.org/all/cc9a1951-e76c-470d-a4d1-8ad67bae5794@amd.com
- Undo the kvm.h uAPI breakage.
- Take advantage of "struct vm_shape", introduced by the guest_memfd
selftests, to simply tracking the SEV/SEV-ES subtypes.
- Rename the test to "sev_smoke_test" instead of "sev_all_boot_test",
as the "all" is rather nonsensical, and the test isn't booting anything
in the traditional sense of the word.
- Drop vm->protected and instead add an arch hook to query if the VM has
protected memory.
- Assert that the target memory region supports protected memory when
allocating protected memory.
- Allocate protected_phy_pages for memory regions if and only if the VM
supports protected memory.
- Rename kvm_host.h to kvm_util_arch.h, and move it to selftests/kvm where
it belongs.
- Fix up some SoB goofs.
- Convert the intrahost SEV/SEV-ES migration tests to use common ioctl()
wrappers.
Ackerley Tng (1):
KVM: selftests: Add a macro to iterate over a sparsebit range
Michael Roth (2):
KVM: selftests: Make sparsebit structs const where appropriate
KVM: selftests: Add support for protected vm_vaddr_* allocations
Peter Gonda (5):
KVM: selftests: Add support for allocating/managing protected guest
memory
KVM: selftests: Explicitly ucall pool from shared memory
KVM: selftests: Allow tagging protected memory in guest page tables
KVM: selftests: Add library for creating and interacting with SEV
guests
KVM: selftests: Add a basic SEV smoke test
Sean Christopherson (3):
KVM: selftests: Extend VM creation's @shape to allow control of VM
subtype
KVM: selftests: Use the SEV library APIs in the intra-host migration
test
KVM: selftests: Add a basic SEV-ES smoke test
tools/testing/selftests/kvm/Makefile | 2 +
.../kvm/include/aarch64/kvm_util_arch.h | 7 ++
.../selftests/kvm/include/kvm_util_base.h | 50 +++++++-
.../kvm/include/riscv/kvm_util_arch.h | 7 ++
.../kvm/include/s390x/kvm_util_arch.h | 7 ++
.../testing/selftests/kvm/include/sparsebit.h | 56 ++++++---
.../kvm/include/x86_64/kvm_util_arch.h | 23 ++++
.../selftests/kvm/include/x86_64/processor.h | 8 ++
.../selftests/kvm/include/x86_64/sev.h | 107 ++++++++++++++++
tools/testing/selftests/kvm/lib/kvm_util.c | 67 ++++++++--
tools/testing/selftests/kvm/lib/sparsebit.c | 48 ++++----
.../testing/selftests/kvm/lib/ucall_common.c | 3 +-
.../selftests/kvm/lib/x86_64/processor.c | 32 ++++-
tools/testing/selftests/kvm/lib/x86_64/sev.c | 114 ++++++++++++++++++
.../selftests/kvm/x86_64/sev_migrate_tests.c | 67 ++++------
.../selftests/kvm/x86_64/sev_smoke_test.c | 88 ++++++++++++++
16 files changed, 583 insertions(+), 103 deletions(-)
create mode 100644 tools/testing/selftests/kvm/include/aarch64/kvm_util_arch.h
create mode 100644 tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h
create mode 100644 tools/testing/selftests/kvm/include/s390x/kvm_util_arch.h
create mode 100644 tools/testing/selftests/kvm/include/x86_64/kvm_util_arch.h
create mode 100644 tools/testing/selftests/kvm/include/x86_64/sev.h
create mode 100644 tools/testing/selftests/kvm/lib/x86_64/sev.c
create mode 100644 tools/testing/selftests/kvm/x86_64/sev_smoke_test.c
base-commit: 60eedcfceda9db46f1b333e5e1aa9359793f04fb
--
2.44.0.rc0.258.g7320e95886-goog
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