m68k: Provide __{get,put}_kernel_nofault

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Allow non-faulting access to kernel addresses without overriding the
address space.  Implemented by passing the instruction name to the
low-level assembly macros as an argument, and force the use of the
normal move instructions for kernel access.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Link: https://lore.kernel.org/r/20210916070405.52750-6-hch@lst.de
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

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Christoph Hellwig 2021-09-16 09:04:04 +02:00 • committed by Geert Uytterhoeven

parent 01eec1af5e

commit 8ade833909

1 changed files with 84 additions and 21 deletions

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105

arch/m68k/include/asm/uaccess.h

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