Reiji Watanabe f0cb43a2c6 arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1 ...

[ Upstream commit f0616abd4e ]

Currently, clear_page() uses DC ZVA instruction unconditionally.  But it
should make sure that DCZID_EL0.DZP, which indicates whether or not use
of DC ZVA instruction is prohibited, is zero when using the instruction.
Use STNP instead when DCZID_EL0.DZP == 1.

Fixes: f27bb139c3 ("arm64: Miscellaneous library functions")
Signed-off-by: Reiji Watanabe <reijiw@google.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20211206004736.1520989-2-reijiw@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-01-27 10:53:54 +01:00

..

clear_page.S

arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1

2022-01-27 10:53:54 +01:00

clear_user.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

copy_from_user.S

arm64: Avoid premature usercopy failure

2021-11-02 19:48:18 +01:00

copy_in_user.S

arm64: Avoid premature usercopy failure

2021-11-02 19:48:18 +01:00

copy_page.S

arm64: lib: Annotate {clear, copy}_page() as position-independent

2022-01-27 10:53:54 +01:00

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

2021-11-02 19:48:18 +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

Makefile

arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE

2020-09-04 12:46:06 +01:00

memchr.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

memcmp.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

memcpy.S

arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S

2020-10-30 08:32:31 +00:00

memmove.S

arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S

2020-10-30 08:32:31 +00:00

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: Enable swap of tagged pages

2020-09-04 12:46:07 +01:00

strchr.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

strcmp.S

arm64: fix spelling mistake "ca not" -> "cannot"

2020-03-17 18:22:40 +00:00

strlen.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

strncmp.S

arm64: lib: Use modern annotations for assembly functions

2020-01-08 12:23:02 +00:00

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: uaccess: Remove uaccess_*_not_uao asm macros

2019-11-20 18:51:54 +00:00

xor-neon.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19 17:09:55 +02:00