[PATCH V6 0/7] KVM: selftests: Add simple SEV test

Peter Gonda
2023-01-10T17:51:12Z

This patch series continues the work Michael Roth has done in supporting
SEV guests in selftests. It continues on top of the work Sean
Christopherson has sent to support ucalls from SEV guests. Along with a
very simple version of the SEV selftests Michael originally proposed.

V6
* Updated SEV VM create function based on Seanjc's feedback and new
changes to VM creation functions.
* Removed pte_me_mask based on feedback.
* Fixed s_bit usage based on TDX
* Fixed bugs and took Ackerly's code for enc_region setup code.

V5
* Rebase onto seanjc@'s latest ucall pool series.
* More review changes based on seanjc:
** use protected instead of encrypted outside of SEV specific files
** Swap memcrypt struct for kvm_vm_arch arch specific struct
** Make protected page table data agnostic of address bit stealing specifics
of SEV
** Further clean up for SEV library to just vm_sev_create_one_vcpu()
* Due to large changes moved more authorships from mroth@ to pgonda@. Gave
originally-by tags to mroth@ as suggested by Seanjc for this.

V4
* Rebase ontop of seanjc@'s latest Ucall Pool series:
https://lore.kernel.org/linux-arm-kernel/20220825232522.3997340-8-seanjc@google.com/
* Fix up review comments from seanjc
* Switch authorship on 2 patches because of significant changes, added
* Michael as suggested-by or originally-by.

V3
* Addressed more of andrew.jones@ in ucall patches.
* Fix build in non-x86 archs.

V2
* Dropped RFC tag
* Correctly separated Sean's ucall patches into 2 as originally
intended.
* Addressed andrew.jones@ in ucall patches.
* Fixed ucall pool usage to work for other archs

V1
* https://lore.kernel.org/all/20220715192956.1873315-1-pgonda@google.com/

Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: marcorr@google.com
Cc: michael.roth@amd.com
Cc: thomas.lendacky@amd.com
Cc: joro@8bytes.org
Cc: pbonzini@redhat.com
Cc: andrew.jones@linux.dev
Cc: vannapurve@google.com
Cc: Sean Christopherson <seanjc@google.com>
Cc: Ackerley Tng <ackerleytng@google.com>

Michael Roth (2):
KVM: selftests: sparsebit: add const where appropriate
KVM: selftests: add support for protected vm_vaddr_* allocations

Peter Gonda (5):
KVM: selftests: add hooks for managing protected guest memory
KVM: selftests: handle protected bits in page tables
KVM: selftests: add library for creating/interacting with SEV guests
KVM: selftests: Update ucall pool to allocate from shared memory
KVM: selftests: Add simple sev vm testing

tools/arch/arm64/include/asm/kvm_host.h | 7 +
tools/arch/riscv/include/asm/kvm_host.h | 7 +
tools/arch/s390/include/asm/kvm_host.h | 7 +
tools/arch/x86/include/asm/kvm_host.h | 14 +
tools/testing/selftests/kvm/.gitignore | 84 ++++++
tools/testing/selftests/kvm/Makefile | 4 +-
.../selftests/kvm/include/kvm_util_base.h | 49 +++-
.../testing/selftests/kvm/include/sparsebit.h | 36 +--
.../selftests/kvm/include/x86_64/processor.h | 1 +
.../selftests/kvm/include/x86_64/sev.h | 27 ++
tools/testing/selftests/kvm/lib/kvm_util.c | 66 ++++-
tools/testing/selftests/kvm/lib/sparsebit.c | 48 ++--
.../testing/selftests/kvm/lib/ucall_common.c | 2 +-
.../selftests/kvm/lib/x86_64/processor.c | 62 ++++-
tools/testing/selftests/kvm/lib/x86_64/sev.c | 254 ++++++++++++++++++
.../selftests/kvm/x86_64/sev_all_boot_test.c | 84 ++++++
16 files changed, 685 insertions(+), 67 deletions(-)
create mode 100644 tools/arch/arm64/include/asm/kvm_host.h
create mode 100644 tools/arch/riscv/include/asm/kvm_host.h
create mode 100644 tools/arch/s390/include/asm/kvm_host.h
create mode 100644 tools/arch/x86/include/asm/kvm_host.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_all_boot_test.c

--
2.39.0.314.g84b9a713c41-goog