tree e5e12235df3fea0e8e37f563c06195ab351d8191
parent d47d49de7399f0cee6e180cebd27e47c9824be05
author Arnd Bergmann <arnd@arndb.de> 1599420329 +0200
committer Arnd Bergmann <arnd@arndb.de> 1604071973 +0100

ARM: uaccess: remove set_fs() implementation

There are no remaining callers of set_fs(), so just remove it
along with all associated code that operates on
thread_info->addr_limit.

There are still further optimizations that can be done:

- In get_user(), the address check could be moved entirely
  into the out of line code, rather than passing a constant
  as an argument,

- I assume the DACR handling can be simplified as we now
  only change it during user access when CONFIG_CPU_SW_DOMAIN_PAN
  is set, but not during set_fs().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>