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2563776b41
linux/arch/arm64/lib
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Vincenzo Frascino 2563776b41 arm64: mte: Tags-aware copy_{user_,}highpage() implementations 
When the Memory Tagging Extension is enabled, the tags need to be
preserved across page copy (e.g. for copy-on-write, page migration).

Introduce MTE-aware copy_{user_,}highpage() functions to copy tags to
the destination if the source page has the PG_mte_tagged flag set.
copy_user_page() does not need to handle tag copying since, with this
patch, it is only called by the DAX code where there is no source page
structure (and no source tags).

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Co-developed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
2020-09-04 12:46:06 +01:00
..
clear_page.S arm64: lib: Use modern annotations for assembly functions 2020-01-08 12:23:02 +00:00
clear_user.S arm64: lib: Use modern annotations for assembly functions 2020-01-08 12:23:02 +00:00
copy_from_user.S arm64: Reorder the macro arguments in the copy routines 2020-04-29 21:50:01 +01:00
copy_in_user.S arm64: Reorder the macro arguments in the copy routines 2020-04-29 21:50:01 +01:00
copy_page.S Merge branch 'for-next/asm-annotations' into for-next/core 2020-01-22 11:34:21 +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: Reorder the macro arguments in the copy routines 2020-04-29 21:50:01 +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: Reorder the macro arguments in the copy routines 2020-04-29 21:50:01 +01:00
memmove.S arm64: lib: Use modern annotations for assembly functions 2020-01-08 12:23:02 +00:00
memset.S arm64: lib: Use modern annotations for assembly functions 2020-01-08 12:23:02 +00:00
mte.S arm64: mte: Tags-aware copy_{user_,}highpage() implementations 2020-09-04 12:46:06 +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