Re: [PATCH v4 0/8] Implement generic cc_platform_has() helper function

[Kuppuswamy, Sathyanarayanan]

On 9/28/21 12:10 PM, Borislav Petkov wrote:
> From: Borislav Petkov <bp@xxxxxxx>
>
> Hi all,
>
> here's v4 of the cc_platform_has() patchset with feedback incorporated.
>
> I'm going to route this through tip if there are no objections.

Intel CC support patch is not included in this series. You want me
to address the issue raised by Joerg before merging it?

> Thx.
>
> Tom Lendacky (8):
>    x86/ioremap: Selectively build arch override encryption functions
>    arch/cc: Introduce a function to check for confidential computing
>      features
>    x86/sev: Add an x86 version of cc_platform_has()
>    powerpc/pseries/svm: Add a powerpc version of cc_platform_has()
>    x86/sme: Replace occurrences of sme_active() with cc_platform_has()
>    x86/sev: Replace occurrences of sev_active() with cc_platform_has()
>    x86/sev: Replace occurrences of sev_es_active() with cc_platform_has()
>    treewide: Replace the use of mem_encrypt_active() with
>      cc_platform_has()
>
>   arch/Kconfig                                 |  3 +
>   arch/powerpc/include/asm/mem_encrypt.h       |  5 --
>   arch/powerpc/platforms/pseries/Kconfig       |  1 +
>   arch/powerpc/platforms/pseries/Makefile      |  2 +
>   arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++
>   arch/powerpc/platforms/pseries/svm.c         |  5 +-
>   arch/s390/include/asm/mem_encrypt.h          |  2 -
>   arch/x86/Kconfig                             |  1 +
>   arch/x86/include/asm/io.h                    |  8 ++
>   arch/x86/include/asm/kexec.h                 |  2 +-
>   arch/x86/include/asm/mem_encrypt.h           | 12 +--
>   arch/x86/kernel/Makefile                     |  6 ++
>   arch/x86/kernel/cc_platform.c                | 69 +++++++++++++++
>   arch/x86/kernel/crash_dump_64.c              |  4 +-
>   arch/x86/kernel/head64.c                     |  9 +-
>   arch/x86/kernel/kvm.c                        |  3 +-
>   arch/x86/kernel/kvmclock.c                   |  4 +-
>   arch/x86/kernel/machine_kexec_64.c           | 19 +++--
>   arch/x86/kernel/pci-swiotlb.c                |  9 +-
>   arch/x86/kernel/relocate_kernel_64.S         |  2 +-
>   arch/x86/kernel/sev.c                        |  6 +-
>   arch/x86/kvm/svm/svm.c                       |  3 +-
>   arch/x86/mm/ioremap.c                        | 18 ++--
>   arch/x86/mm/mem_encrypt.c                    | 55 ++++--------
>   arch/x86/mm/mem_encrypt_identity.c           |  9 +-
>   arch/x86/mm/pat/set_memory.c                 |  3 +-
>   arch/x86/platform/efi/efi_64.c               |  9 +-
>   arch/x86/realmode/init.c                     |  8 +-
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c      |  4 +-
>   drivers/gpu/drm/drm_cache.c                  |  4 +-
>   drivers/gpu/drm/vmwgfx/vmwgfx_drv.c          |  4 +-
>   drivers/gpu/drm/vmwgfx/vmwgfx_msg.c          |  6 +-
>   drivers/iommu/amd/init.c                     |  7 +-
>   drivers/iommu/amd/iommu.c                    |  3 +-
>   drivers/iommu/amd/iommu_v2.c                 |  3 +-
>   drivers/iommu/iommu.c                        |  3 +-
>   fs/proc/vmcore.c                             |  6 +-
>   include/linux/cc_platform.h                  | 88 ++++++++++++++++++++
>   include/linux/mem_encrypt.h                  |  4 -
>   kernel/dma/swiotlb.c                         |  4 +-
>   40 files changed, 310 insertions(+), 129 deletions(-)
>   create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c
>   create mode 100644 arch/x86/kernel/cc_platform.c
>   create mode 100644 include/linux/cc_platform.h

--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer