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Remove PR_TAGGED_ADDR_ENABLE from sys/prctl.h

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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>
This commit is contained in:
Szabolcs Nagy 2021-02-02 15:02:09 +00:00
parent bdc12a77b7
commit f4596d9540
1 changed files with 0 additions and 4 deletions
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4
sysdeps/unix/sysv/linux/sys/prctl.h
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@ -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)