Messages in this thread | | | Subject | Re: [PATCH v3 0/8] Implement generic cc_platform_has() helper function | From | Tom Lendacky <> | Date | Thu, 9 Sep 2021 08:01:49 -0500 |
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On 9/9/21 2:32 AM, Christian Borntraeger wrote: > > > On 09.09.21 00:58, Tom Lendacky wrote: >> This patch series provides a generic helper function, cc_platform_has(), >> to replace the sme_active(), sev_active(), sev_es_active() and >> mem_encrypt_active() functions. >> >> It is expected that as new confidential computing technologies are >> added to the kernel, they can all be covered by a single function call >> instead of a collection of specific function calls all called from the >> same locations. >> >> The powerpc and s390 patches have been compile tested only. Can the >> folks copied on this series verify that nothing breaks for them. > > Is there a tree somewhere?
I pushed it up to github:
https://github.com/AMDESE/linux/tree/prot-guest-has-v3
Thanks, Tom
> > Also, >> a new file, arch/powerpc/platforms/pseries/cc_platform.c, has been >> created for powerpc to hold the out of line function. >> >> Cc: Andi Kleen <ak@linux.intel.com> >> Cc: Andy Lutomirski <luto@kernel.org> >> Cc: Ard Biesheuvel <ardb@kernel.org> >> Cc: Baoquan He <bhe@redhat.com> >> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> >> Cc: Borislav Petkov <bp@alien8.de> >> Cc: Christian Borntraeger <borntraeger@de.ibm.com> >> Cc: Daniel Vetter <daniel@ffwll.ch> >> Cc: Dave Hansen <dave.hansen@linux.intel.com> >> Cc: Dave Young <dyoung@redhat.com> >> Cc: David Airlie <airlied@linux.ie> >> Cc: Heiko Carstens <hca@linux.ibm.com> >> Cc: Ingo Molnar <mingo@redhat.com> >> Cc: Joerg Roedel <joro@8bytes.org> >> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> >> Cc: Maxime Ripard <mripard@kernel.org> >> Cc: Michael Ellerman <mpe@ellerman.id.au> >> Cc: Paul Mackerras <paulus@samba.org> >> Cc: Peter Zijlstra <peterz@infradead.org> >> Cc: Thomas Gleixner <tglx@linutronix.de> >> Cc: Thomas Zimmermann <tzimmermann@suse.de> >> Cc: Vasily Gorbik <gor@linux.ibm.com> >> Cc: VMware Graphics <linux-graphics-maintainer@vmware.com> >> Cc: Will Deacon <will@kernel.org> >> Cc: Christoph Hellwig <hch@infradead.org> >> >> --- >> >> Patches based on: >> >> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git&data=04%7C01%7Cthomas.lendacky%40amd.com%7C5cd71ef2c2ce4b90060708d973640358%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637667695657121432%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=FVngrPSxCCRKutAaIMtU2Nk8WArFQB1dEE2wN7v8RgA%3D&reserved=0 >> master >> 4b93c544e90e ("thunderbolt: test: split up test cases in >> tb_test_credit_alloc_all") >> >> Changes since v2: >> - Changed the name from prot_guest_has() to cc_platform_has() >> - Took the cc_platform_has() function out of line. Created two new files, >> cc_platform.c, in both x86 and ppc to implment the function. As a >> result, also changed the attribute defines into enums. >> - Removed any received Reviewed-by's and Acked-by's given changes in this >> version. >> - Added removal of new instances of mem_encrypt_active() usage in powerpc >> arch. >> - Based on latest Linux tree to pick up powerpc changes related to the >> mem_encrypt_active() function. >> >> Changes since v1: >> - Moved some arch ioremap functions within #ifdef CONFIG_AMD_MEM_ENCRYPT >> in prep for use of prot_guest_has() by TDX. >> - Added type includes to the the protected_guest.h header file to prevent >> build errors outside of x86. >> - Made amd_prot_guest_has() EXPORT_SYMBOL_GPL >> - Used amd_prot_guest_has() in place of checking sme_me_mask in the >> arch/x86/mm/mem_encrypt.c file. >> >> Tom Lendacky (8): >> x86/ioremap: Selectively build arch override encryption functions >> mm: 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 | 14 +--- >> arch/x86/kernel/Makefile | 3 + >> arch/x86/kernel/cc_platform.c | 21 +++++ >> arch/x86/kernel/crash_dump_64.c | 4 +- >> arch/x86/kernel/head64.c | 4 +- >> 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 | 57 +++++++------ >> arch/x86/mm/mem_encrypt_identity.c | 3 +- >> 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, 267 insertions(+), 114 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 >> >> >> base-commit: 4b93c544e90e2b28326182d31ee008eb80e02074 >>
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