ACK: [SRU][N:intel][PATCH 0/4] Fix QEMU/KVM support for EPT paging level 4/5

[Agathe Porte]

2024-07-04 18:26 CEST, Thibault Ferrante:
> BugLink: https://bugs.launchpad.net/bugs/2071628
> 
> [ Impact ]
> 
>  * Fix EPT paging level 4 using incorrectly memory range in specific configuration.
>  * Expose support of EPT paging level 5 for compatible hardware (e.g. Sierra Forest).
> 
> [ Fix ]
> 
> Clean cherry pick upstream and associated self-tests.
> 
> [ Test Plan ]
> 
> On compatible hardware (e.g. Sierra forest):
>  * Verify level 5 EPT capability flag
>  * Execute self-tests
> 
> Already tested by intel.
> 
> [ Where problems could occur ]
> 
>  * Regression in KVM features.
> 
> [ Other info ]
> 
> Context:
> https://lore.kernel.org/all/170864656017.3080257.14048100709856204250.b4-ty@google.com/
> https://lore.kernel.org/all/171754268137.2777430.1222935014468693201.b4-ty@google.com/
> 
> 
> Peter Gonda (2):
>   KVM: selftests: Allow tagging protected memory in guest page tables
>   KVM: selftests: Add library for creating and interacting with SEV
>     guests
> 
> Sean Christopherson (1):
>   x86/cpu: Add a VMX flag to enumerate 5-level EPT support to userspace
> 
> Tao Su (1):
>   KVM: selftests: x86: Prioritize getting max_gfn from GuestPhysBits
> 
>  arch/x86/include/asm/vmxfeatures.h            |   1 +
>  arch/x86/kernel/cpu/feat_ctl.c                |   2 +
>  tools/testing/selftests/kvm/Makefile          |   1 +
>  .../kvm/include/aarch64/kvm_util_arch.h       |   7 ++
>  .../selftests/kvm/include/kvm_util_base.h     |  13 +++
>  .../kvm/include/riscv/kvm_util_arch.h         |   7 ++
>  .../kvm/include/s390x/kvm_util_arch.h         |   7 ++
>  .../kvm/include/x86_64/kvm_util_arch.h        |  23 ++++
>  .../selftests/kvm/include/x86_64/processor.h  |   9 ++
>  .../selftests/kvm/include/x86_64/sev.h        | 105 +++++++++++++++++
>  tools/testing/selftests/kvm/lib/kvm_util.c    |  18 +++
>  .../selftests/kvm/lib/x86_64/processor.c      |  47 +++++++-
>  tools/testing/selftests/kvm/lib/x86_64/sev.c  | 110 ++++++++++++++++++
>  13 files changed, 347 insertions(+), 3 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

Acked-by: Agathe Porte <agathe.porte at canonical.com>