[tip:x86/asm] x86/mm: Include SEV for encryption memory attribute changes

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Commit-ID:  a72ec5a34dca3b635eb2de3b485d0a1b2e591a5c
Gitweb:     https://git.kernel.org/tip/a72ec5a34dca3b635eb2de3b485d0a1b2e591a5c
Author:     Tom Lendacky <thomas.lendacky@xxxxxxx>
AuthorDate: Fri, 20 Oct 2017 09:30:48 -0500
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 7 Nov 2017 15:35:56 +0100

x86/mm: Include SEV for encryption memory attribute changes

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@xxxxxxx>
Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Borislav Petkov <bp@xxxxxxx>
Tested-by: Borislav Petkov <bp@xxxxxxx>
Cc: Laura Abbott <labbott@xxxxxxxxxx>
Cc: John Ogness <john.ogness@xxxxxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20171020143059.3291-7-brijesh.singh@xxxxxxx

---
 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..3fe6848 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 memory encryption is not active */
+	if (!mem_encrypt_active())
 		return 0;
 
 	/* Should not be working on unaligned addresses */
--
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