[RFC Part1 PATCH v3 07/17] x86/mm: Include SEV for encryption memory attribute changes

Brijesh Singh brijesh.singh at amd.com
Tue Jul 25 05:07:47 AEST 2017

From: Tom Lendacky <thomas.lendacky at amd.com>

The current code checks only for sme_active() when determining whether
to perform the encryption attribute change.  Include sev_active() in this
check so that memory attribute changes can occur under SME and SEV.

Signed-off-by: Tom Lendacky <thomas.lendacky at amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh at amd.com>
 arch/x86/mm/pageattr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index dfb7d65..b726b23 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -1781,8 +1781,8 @@ static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
 	unsigned long start;
 	int ret;
-	/* Nothing to do if the SME is not active */
-	if (!sme_active())
+	/* Nothing to do if SME and SEV are not active */
+	if (!sme_active() && !sev_active())
 		return 0;
 	/* Should not be working on unaligned addresses */

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