x86/coco: Explicitly declare type of confidential computing platform

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The kernel derives the confidential computing platform
type it is running as from sme_me_mask on AMD or by using
hv_is_isolation_supported() on HyperV isolation VMs. This detection
process will be more complicated as more platforms get added.

Declare a confidential computing vendor variable explicitly and set it
via cc_set_vendor() on the respective platform.

  [ bp: Massage commit message, fixup HyperV check. ]

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20220222185740.26228-4-kirill.shutemov@linux.intel.com

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Kirill A. Shutemov 2022-02-22 21:57:39 +03:00 • committed by Borislav Petkov

parent 6198311093

commit 655a0fa34b

4 changed files with 44 additions and 16 deletions

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29

arch/x86/coco/core.c

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14

arch/x86/include/asm/coco.h

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6

arch/x86/kernel/cpu/mshyperv.c

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11

arch/x86/mm/mem_encrypt_identity.c

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