Page MenuHomeFreeBSD
Differential D55960

arm64: mte: cpu feature detection for FEAT_MTE/FEAT_MTE2
Needs ReviewPublic
Actions

Authored by andrew on Thu, Mar 19, 4:07 PM.
Tags
None
Referenced Files
Unknown Object (File)
Wed, Apr 15, 12:48 AM
Unknown Object (File)
Tue, Apr 14, 6:14 AM
Unknown Object (File)
Sun, Apr 12, 7:23 PM
Unknown Object (File)
Sat, Apr 11, 6:22 PM
Unknown Object (File)
Sat, Apr 11, 3:41 PM
Unknown Object (File)
Sat, Apr 11, 4:00 AM
Unknown Object (File)
Fri, Apr 10, 12:08 PM
Unknown Object (File)
Wed, Apr 8, 9:56 AM
View All 19 Files
Subscribers
emaste
imp
qw304_cam.ac.uk

Details

Reviewers
manu
Group Reviewers
arm64
Summary

Using the CPU feature detection framework, add a CPU_FEAT_EARLY_BOOT
check for the Memory Tagging Extension, and a HWCAP for FEAT_MTE.

Like Pointer Authentication (sys/arm64/arm64/ptrauth.c), MTE logic will
be kept within it's own file. In order to use the MTE registers and
instructions, this file needs the "-march=armv8.5+memtag" compiler flag.

Sponsored by: Arm Ltd
Signed-off-by: Harry Moulton <harry.moulton@arm.com>
Co-authored-by: Andrew Turner <andrew@FreeBSD.org>

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 71541
Build 68424: arc lint + arc unit

Revision Contents
Changeset List

PathSize
sys/
arm64/
arm64/
8 lines
3 lines
45 lines

Diff 173930

View Options

sys/arm64/arm64/identcpu.c

Loading...
View Options

sys/arm64/arm64/locore.S

Loading...
View Options

sys/arm64/arm64/mte.c

Loading...