architectures that still need to remove set_fs()

Hi all,

you are in this list because your architecture still implements and uses address space overrides using set_fs(), which are deprecated and have been removed from all mainstream architecture ports. To help cleanup the core kernel it would be great to make progress on removing set_fs entirely.

The following steps are required:

(1) implement the __get_kernel_nofault and __put_kernel_nofault helper to access kernel memory without page faults, replacing the get/put_user under set_fs(KERNEL_DS) abuse. Mips has a good example for a trivial implementation for architectures that use a common address space in commit 04324f44cb69
(2) remove any architecture specific use of such constructs. This only affects ia64 and sh.
(3) stop selecting the SET_FS and remove all the set_fs-related infrastructure. The above mips commit is a good guide once again.

Thanks!

Hi,

Also see commit 08ee3a009f49a which is preparation for removing set_fs/get_fs this commit implements __get_kernel_nofault/__put_kernel_nofault for mips.

I will look into this for OpenRISC.

-Stafford