[PATCH 02/16] Remove PR_TAGGED_ADDR_ENABLE from sys/prctl.h

[Szabolcs Nagy]

The value of PR_TAGGED_ADDR_ENABLE was incorrect in the installed
headers and the prctl command macros were missing that are needed
for it to be useful (PR_SET_TAGGED_ADDR_CTRL).  Linux headers have
the definitions since 5.4 so it's widely available, we don't need
to repeat these definitions.  The remaining definitions are from
Linux 5.10.

To build glibc with --enable-memory-tagging, Linux 5.4 headers and
binutils 2.33.1 or newer is needed.
---
 sysdeps/unix/sysv/linux/sys/prctl.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/sys/prctl.h b/sysdeps/unix/sysv/linux/sys/prctl.h
index 00817ff0f1..c9048c7cdb 100644
--- a/sysdeps/unix/sysv/linux/sys/prctl.h
+++ b/sysdeps/unix/sysv/linux/sys/prctl.h
@@ -25,10 +25,6 @@
    we're picking up...  */
 
 /* Memory tagging control operations (for AArch64).  */
-#ifndef PR_TAGGED_ADDR_ENABLE
-# define PR_TAGGED_ADDR_ENABLE	(1UL << 8)
-#endif
-
 #ifndef PR_MTE_TCF_SHIFT
 # define PR_MTE_TCF_SHIFT	1
 # define PR_MTE_TCF_NONE	(0UL << PR_MTE_TCF_SHIFT)
-- 
2.17.1