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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-16 11:26:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-16 11:26:37 -0700 |
| commit | 27ebbf9d5bc0ab0a8ca875119e0ce4cd267fa2fc (patch) | |
| tree | 321883ef69804066ccdc90e3ca1c63ca0f7bcd0c /lib/Kconfig | |
| parent | d396360acdf7e57edcd9e2d080343b0353d65d63 (diff) | |
| parent | 6edd1dbace0e8529ed167e8a5f9da63c0cc763cc (diff) | |
| download | lwn-27ebbf9d5bc0ab0a8ca875119e0ce4cd267fa2fc.tar.gz lwn-27ebbf9d5bc0ab0a8ca875119e0ce4cd267fa2fc.zip | |
Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull nommu generic uaccess updates from Arnd Bergmann:
"asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers
Christoph Hellwig writes:
This is a series doing two somewhat interwinded things. It improves
the asm-generic nommu uaccess helper to optionally be entirely
generic and not require any arch helpers for the actual uaccess.
For the generic uaccess.h to actually be generically useful I also
had to kill off the mess we made of <asm/segment.h>, which really
shouldn't exist on most architectures"
* tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic: optimize generic uaccess for 8-byte loads and stores
asm-generic: provide entirely generic nommu uaccess
arch: mostly remove <asm/segment.h>
asm-generic: don't include <asm/segment.h> from <asm/uaccess.h>
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 3577609b61be..8d9239a4156c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -601,6 +601,10 @@ config ARCH_NO_SG_CHAIN config ARCH_HAS_PMEM_API bool +# use memcpy to implement user copies for nommu architectures +config UACCESS_MEMCPY + bool + config ARCH_HAS_UACCESS_FLUSHCACHE bool |