[RFC PATCH v9 21/27] binfmt_elf: Define GNU_PROPERTY_X86_FEATURE_1_AND

[Yu-cheng Yu]

An ELF file's .note.gnu.property indicates architecture features of
the file.  Introduce feature definitions for Control-flow Enforcement
Technology (CET): Shadow Stack and Indirect Branch Tracking.

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx>
---
 include/uapi/linux/elf.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index c37731407074..61251ecabdd7 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -444,4 +444,11 @@ typedef struct elf64_note {
   Elf64_Word n_type;	/* Content type */
 } Elf64_Nhdr;
 
+/* .note.gnu.property types */
+#define GNU_PROPERTY_X86_FEATURE_1_AND		0xc0000002
+
+/* Bits of GNU_PROPERTY_X86_FEATURE_1_AND */
+#define GNU_PROPERTY_X86_FEATURE_1_IBT		0x00000001
+#define GNU_PROPERTY_X86_FEATURE_1_SHSTK	0x00000002
+
 #endif /* _UAPI_LINUX_ELF_H */
-- 
2.21.0