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Reiji Watanabe c7f0c087d4 arm64: mte: DC {GVA,GZVA} shouldn't be used when DCZID_EL0.DZP == 1 
[ Upstream commit 685e2564daa1493053fcd7f1dbed38b35ee2f3cb ]

Currently, mte_set_mem_tag_range() and mte_zero_clear_page_tags() use
DC {GVA,GZVA} unconditionally.  But, they should make sure that
DCZID_EL0.DZP, which indicates whether or not use of those instructions
is prohibited, is zero when using those instructions.
Use ST{G,ZG,Z2G} instead when DCZID_EL0.DZP == 1.

Fixes: 013bb59dbb7c ("arm64: mte: handle tags zeroing at page allocation time")
Fixes: 3d0cca0b02ac ("kasan: speed up mte_set_mem_tag_range")
Signed-off-by: Reiji Watanabe <reijiw@google.com>
Link: https://lore.kernel.org/r/20211206004736.1520989-3-reijiw@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 11:03:28 +01:00
..
clear_page.S
arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1
2022-01-27 11:03:28 +01:00
clear_user.S
arm64: Rewrite __arch_clear_user()
2021-06-01 18:34:38 +01:00
copy_from_user.S
arm64: Avoid premature usercopy failure
2021-07-15 17:29:14 +01:00
copy_page.S
arm64: lib: Annotate {clear, copy}_page() as position-independent
2021-03-19 12:01:19 +00:00
copy_template.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
copy_to_user.S
arm64: Avoid premature usercopy failure
2021-07-15 17:29:14 +01:00
crc32.S
arm64: lib: Consistently enable crc32 extension
2020-04-28 14:36:32 +01:00
csum.c
arm64: csum: Disable KASAN for do_csum()
2020-04-15 21:36:41 +01:00
delay.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
error-inject.c
arm64: Add support for function error injection
2019-08-07 13:53:09 +01:00
insn.c
arm64: use __func__ to get function name in pr_err
2021-07-30 16:26:16 +01:00
kasan_sw_tags.S
kasan: arm64: support specialized outlined tag mismatch checks
2021-05-26 23:31:26 +01:00
Makefile
arch: remove compat_alloc_user_space
2021-09-08 15:32:35 -07:00
memchr.S
arm64: Better optimised memchr()
2021-06-01 18:34:38 +01:00
memcmp.S
arm64: update string routine copyrights and URLs
2021-06-02 17:58:26 +01:00
memcpy.S
arm64: update string routine copyrights and URLs
2021-06-02 17:58:26 +01:00
memset.S
arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
2020-10-30 08:32:31 +00:00
mte.S
arm64: mte: DC {GVA,GZVA} shouldn't be used when DCZID_EL0.DZP == 1
2022-01-27 11:03:28 +01:00
strchr.S
arm64: lib: Use modern annotations for assembly functions
2020-01-08 12:23:02 +00:00
strcmp.S
arm64: Mitigate MTE issues with str{n}cmp()
2021-09-21 14:50:19 +01:00
strlen.S
arm64: fix strlen() with CONFIG_KASAN_HW_TAGS
2021-07-12 13:36:22 +01:00
strncmp.S
arm64: Mitigate MTE issues with str{n}cmp()
2021-09-21 14:50:19 +01:00
strnlen.S
arm64: lib: Use modern annotations for assembly functions
2020-01-08 12:23:02 +00:00
strrchr.S
arm64: lib: Use modern annotations for assembly functions
2020-01-08 12:23:02 +00:00
tishift.S
arm64: lib: Use modern annotations for assembly functions
2020-01-08 12:23:02 +00:00
uaccess_flushcache.c
arm64: Rename arm64-internal cache maintenance functions
2021-05-25 19:27:49 +01:00
xor-neon.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00