These patches and are also available at:
https://github.com/mdroth/linux/commits/sev-selftests-rfc1
They are based on top of v5 of Brijesh's SEV-SNP hypervisor patches[1] to allow for SEV-SNP testing and provide some context for the overall design, but the SEV/SEV-ES patches can be carved out into a separate series as needed.
== OVERVIEW ==
This series introduces a set of memory encryption-related parameter/hooks in the core kselftest library, then uses the hooks to implement a small library for creating/managing SEV, SEV-ES, SEV-SNP guests. This library is then used to implement a basic boot/memory test that's run for all variants of SEV/SEV-ES/SEV-SNP guest types, as well as a set of SEV-SNP tests that cover various permutations of pvalidate/page-state changes.
- Patches 1-7 implement SEV boot tests and should run against existing kernels - Patch 8 is a KVM changes that's required to allow SEV-ES/SEV-SNP guests to boot with an externally generated page table, and is a host kernel prequisite for the remaining patches in the series. - Patches 9-12 extend the boot tests to cover SEV-ES - Patches 13-16 extend the boot testst to cover SEV-SNP, and introduce an additional test for page-state changes.
Any review/comments are greatly appreciated!
[1] https://lore.kernel.org/linux-mm/20210820155918.7518-1-brijesh.singh@amd.com...
---------------------------------------------------------------- Michael Roth (16): KVM: selftests: move vm_phy_pages_alloc() earlier in file KVM: selftests: add hooks for managing encrypted guest memory KVM: selftests: handle encryption bits in page tables KVM: selftests: set CPUID before setting sregs in vcpu creation KVM: selftests: add support for encrypted vm_vaddr_* allocations KVM: selftests: add library for creating/interacting with SEV guests KVM: selftests: add SEV boot tests KVM: SVM: include CR3 in initial VMSA state for SEV-ES guests KVM: selftests: account for error code in #VC exception frame KVM: selftests: add support for creating SEV-ES guests KVM: selftests: add library for handling SEV-ES-related exits KVM: selftests: add SEV-ES boot tests KVM: selftests: add support for creating SEV-SNP guests KVM: selftests: add helpers for SEV-SNP-related instructions/exits KVM: selftests: add SEV-SNP boot tests KVM: selftests: add SEV-SNP tests for page-state changes
arch/x86/include/asm/kvm-x86-ops.h | 1 + arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/svm/svm.c | 22 ++ arch/x86/kvm/vmx/vmx.c | 8 + arch/x86/kvm/x86.c | 3 +- tools/testing/selftests/kvm/.gitignore | 2 + tools/testing/selftests/kvm/Makefile | 3 + tools/testing/selftests/kvm/include/kvm_util.h | 8 + tools/testing/selftests/kvm/include/x86_64/sev.h | 70 ++++ .../selftests/kvm/include/x86_64/sev_exitlib.h | 20 ++ tools/testing/selftests/kvm/include/x86_64/svm.h | 35 ++ .../selftests/kvm/include/x86_64/svm_util.h | 2 + tools/testing/selftests/kvm/lib/kvm_util.c | 249 +++++++++----- .../testing/selftests/kvm/lib/kvm_util_internal.h | 10 + tools/testing/selftests/kvm/lib/x86_64/handlers.S | 4 +- tools/testing/selftests/kvm/lib/x86_64/processor.c | 30 +- tools/testing/selftests/kvm/lib/x86_64/sev.c | 381 +++++++++++++++++++++ .../testing/selftests/kvm/lib/x86_64/sev_exitlib.c | 326 ++++++++++++++++++ .../selftests/kvm/x86_64/sev_all_boot_test.c | 367 ++++++++++++++++++++ .../selftests/kvm/x86_64/sev_snp_psc_test.c | 378 ++++++++++++++++++++ 20 files changed, 1820 insertions(+), 100 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/x86_64/sev.h create mode 100644 tools/testing/selftests/kvm/include/x86_64/sev_exitlib.h create mode 100644 tools/testing/selftests/kvm/lib/x86_64/sev.c create mode 100644 tools/testing/selftests/kvm/lib/x86_64/sev_exitlib.c create mode 100644 tools/testing/selftests/kvm/x86_64/sev_all_boot_test.c create mode 100644 tools/testing/selftests/kvm/x86_64/sev_snp_psc_test.c