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authorBrijesh Singh <brijesh.singh@amd.com>2022-02-24 19:55:49 +0300
committerBorislav Petkov <bp@suse.de>2022-04-06 14:02:34 +0300
commitf742b90e61bb53b27771f64bdae05db03a6ab1f2 (patch)
tree67e176343fb8dc60a5e69746f2b4e2c15fbb7056 /include/linux/cc_platform.h
parentbcce829083339bf862d66df602cbb111943da8fb (diff)
downloadlinux-f742b90e61bb53b27771f64bdae05db03a6ab1f2.tar.xz
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 'include/linux/cc_platform.h')
-rw-r--r--include/linux/cc_platform.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
index efd8205282da..d08dd65b5c43 100644
--- a/include/linux/cc_platform.h
+++ b/include/linux/cc_platform.h
@@ -72,6 +72,14 @@ enum cc_attr {
* Examples include TDX guest & SEV.
*/
CC_ATTR_GUEST_UNROLL_STRING_IO,
+
+ /**
+ * @CC_ATTR_SEV_SNP: Guest SNP is active.
+ *
+ * The platform/OS is running as a guest/virtual machine and actively
+ * using AMD SEV-SNP features.
+ */
+ CC_ATTR_GUEST_SEV_SNP,
};
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM