summaryrefslogtreecommitdiff
path: root/include/linux/cc_platform.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/cc_platform.h')
-rw-r--r--include/linux/cc_platform.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
index a075b70b9a70..efd8205282da 100644
--- a/include/linux/cc_platform.h
+++ b/include/linux/cc_platform.h
@@ -61,6 +61,17 @@ enum cc_attr {
* Examples include SEV-ES.
*/
CC_ATTR_GUEST_STATE_ENCRYPT,
+
+ /**
+ * @CC_ATTR_GUEST_UNROLL_STRING_IO: String I/O is implemented with
+ * IN/OUT instructions
+ *
+ * The platform/OS is running as a guest/virtual machine and uses
+ * IN/OUT instructions in place of string I/O.
+ *
+ * Examples include TDX guest & SEV.
+ */
+ CC_ATTR_GUEST_UNROLL_STRING_IO,
};
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM