diff options
| author | Babu Moger <babu.moger@amd.com> | 2020-05-28 11:08:23 -0500 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-05-28 18:27:40 +0200 |
| commit | 38f3e775e9c242f5430a9c08c11be7577f63a41c (patch) | |
| tree | 678b94f38307ba0dfe7037e2346c6f899f39ec8e | |
| parent | d6ee6529436a15a0541aff6e1697989ee7dc2c44 (diff) | |
x86/Kconfig: Update config and kernel doc for MPK feature on AMD
AMD's next generation of EPYC processors support the MPK (Memory
Protection Keys) feature. Update the dependency and documentation.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/159068199556.26992.17733929401377275140.stgit@naples-babu.amd.com
| -rw-r--r-- | Documentation/core-api/protection-keys.rst | 5 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 4 |
2 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/core-api/protection-keys.rst b/Documentation/core-api/protection-keys.rst index 49d9833af871..ec575e72d0b2 100644 --- a/Documentation/core-api/protection-keys.rst +++ b/Documentation/core-api/protection-keys.rst @@ -5,8 +5,9 @@ Memory Protection Keys ====================== Memory Protection Keys for Userspace (PKU aka PKEYs) is a feature -which is found on Intel's Skylake "Scalable Processor" Server CPUs. -It will be avalable in future non-server parts. +which is found on Intel's Skylake (and later) "Scalable Processor" +Server CPUs. It will be available in future non-server Intel parts +and future AMD processors. For anyone wishing to test or use this feature, it is available in Amazon's EC2 C5 instances and is known to work there using an Ubuntu diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d6104ea8af0..968d23f3fc16 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1887,10 +1887,10 @@ config X86_UMIP results are dummy. config X86_INTEL_MEMORY_PROTECTION_KEYS - prompt "Intel Memory Protection Keys" + prompt "Memory Protection Keys" def_bool y # Note: only available in 64-bit mode - depends on CPU_SUP_INTEL && X86_64 + depends on X86_64 && (CPU_SUP_INTEL || CPU_SUP_AMD) select ARCH_USES_HIGH_VMA_FLAGS select ARCH_HAS_PKEYS ---help--- |