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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2021-09-09 01:58:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 21:17:21 +0300 |
| commit | d1568346180023918716cc23cc58ba0ab7ca80cf (patch) | |
| tree | 31042223568efe04330b54b2fbe44beec994f97d /arch/Kconfig | |
| parent | 03fbc935ac6216ccb87f274d642d0607bf1915d0 (diff) | |
| download | linux-d1568346180023918716cc23cc58ba0ab7ca80cf.tar.xz | |
arch/cc: Introduce a function to check for confidential computing features
commit 46b49b12f3fc5e1347dba37d4639e2165f447871 upstream.
In preparation for other confidential computing technologies, introduce
a generic helper function, cc_platform_has(), that can be used to
check for specific active confidential computing attributes, like
memory encryption. This is intended to eliminate having to add multiple
technology-specific checks to the code (e.g. if (sev_active() ||
tdx_active() || ... ).
[ bp: s/_CC_PLATFORM_H/_LINUX_CC_PLATFORM_H/g ]
Co-developed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Co-developed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210928191009.32551-3-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 8df1c7102643..d1e69d6e8498 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1234,6 +1234,9 @@ config RELR config ARCH_HAS_MEM_ENCRYPT bool +config ARCH_HAS_CC_PLATFORM + bool + config HAVE_SPARSE_SYSCALL_NR bool help |