MIPS: asm: uaccess: Add EVA support to copy_{in, to,from}_user

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Use the EVA specific functions from memcpy.S to perform
userspace operations. When get_fs() == get_ds() the usual load/store
instructions are used because the destination address is located in
the kernel address space region. Otherwise, the EVA specifc load/store
instructions are used which will go through th TLB to perform the virtual
to physical translation for the userspace address.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

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Markos Chandras 2013-12-11 16:47:10 +00:00 • committed by Ralf Baechle

parent 0081ad2486

commit 05c6516005

1 changed files with 171 additions and 20 deletions

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arch/mips/include/asm/uaccess.h

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