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| author |   Brijesh Singh <brijesh.singh@amd.com> | 2022-02-24 10:55:49 -0600 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-04-06 13:02:34 +0200 |
| commit | f742b90e61bb53b27771f64bdae05db03a6ab1f2 (patch) | |
| tree | 67e176343fb8dc60a5e69746f2b4e2c15fbb7056 /arch/x86/mm/mem_encrypt.c | |
| parent | x86/sev: Detect/setup SEV/SME features earlier in boot (diff) | |
| download | linux-dev-f742b90e61bb53b27771f64bdae05db03a6ab1f2.tar.xz linux-dev-f742b90e61bb53b27771f64bdae05db03a6ab1f2.zip | |
x86/mm: Extend cc_attr to include AMD SEV-SNP
The CC_ATTR_GUEST_SEV_SNP can be used by the guest to query whether the
SNP (Secure Nested Paging) feature is active.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220307213356.2797205-10-brijesh.singh@amd.com
Diffstat (limited to 'arch/x86/mm/mem_encrypt.c')
| -rw-r--r-- | arch/x86/mm/mem_encrypt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 50d209939c66..f85868c031c6 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -62,6 +62,10 @@ static void print_mem_encrypt_feature_info(void) if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT)) pr_cont(" SEV-ES"); + /* Secure Nested Paging */ + if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) + pr_cont(" SEV-SNP"); + pr_cont("\n"); } |