On 09/02/2016 06:03 AM, Borislav Petkov wrote:

On Mon, Aug 22, 2016 at 05:35:59PM -0500, Tom Lendacky wrote:

quoted

Provide the Kconfig support to build the SME support in the kernel.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
 arch/x86/Kconfig |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c580d8c..131f329 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig

@@ -1357,6 +1357,15 @@ config X86_DIRECT_GBPAGES
 	  supports them), so don't confuse the user by printing
 	  that we have them enabled.
 
+config AMD_MEM_ENCRYPT
+	bool "Secure Memory Encryption support for AMD"

	     "AMD Secure Memory Encryption support"

Ok.

Thanks,
Tom

quoted

+	depends on X86_64 && CPU_SUP_AMD
+	---help---
+	  Say yes to enable the encryption of system memory. This requires
+	  an AMD processor that supports Secure Memory Encryption (SME).
+	  The encryption of system memory is disabled by default but can be
+	  enabled with the mem_encrypt=on command line option.
+
 # Common NUMA Features
 config NUMA
 	bool "Numa Memory Allocation and Scheduler Support"

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