maccess: unify the probe kernel arch hooks

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Currently architectures have to override every routine that probes
kernel memory, which includes a pure read and strcpy, both in strict
and not strict variants.  Just provide a single arch hooks instead to
make sure all architectures cover all the cases.

[akpm@linux-foundation.org: fix !CONFIG_X86_64 build]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20200521152301.2587579-11-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

This commit is contained in:

Christoph Hellwig 2020-06-08 21:34:27 -07:00 • committed by Linus Torvalds

parent cd0309058f

commit eab0c6089b

5 changed files with 61 additions and 50 deletions

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12

arch/parisc/lib/memcpy.c

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10

arch/um/kernel/maccess.c

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33

arch/x86/mm/maccess.c

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6

include/linux/uaccess.h

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50

mm/maccess.c

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