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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@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Borislav Petkov <bp@suse.de>
Cc: Laura Abbott <labbott@redhat.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: kvm@vger.kernel.org
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: https://lkml.kernel.org/r/20171020143059.3291-7-brijesh.singh@amd.com
This commit is contained in:
Tom Lendacky 2017-10-20 09:30:48 -05:00 committed by Thomas Gleixner
parent 072f58c6ce
commit a72ec5a34d
1 changed files with 2 additions and 2 deletions
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4
arch/x86/mm/pageattr.c
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@ -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 */