From: Szabolcs Nagy <szabolcs.nagy@arm.com>
To: libc-stable@sourceware.org
Subject: [2.33 COMMITTED] Remove PR_TAGGED_ADDR_ENABLE from sys/prctl.h
Date: Wed, 14 Apr 2021 09:24:28 +0100 [thread overview]
Message-ID: <20210414082428.19672-1-szabolcs.nagy@arm.com> (raw)
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.
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit f4596d9540021265a99697fceef8a434c47e8bcf)
---
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
reply other threads:[~2021-04-14 8:24 UTC|newest]
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