Revert "arm64: uaccess: Implement unsafe accessors"

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This reverts commit 0bd3ef34d2.

There is ongoing work on objtool to identify incorrect uses of
user_access_{begin,end}. Until this is sorted, do not enable the
functionality on arm64. Also, on ARMv8.2 CPUs with hardware PAN and UAO
support, there is no obvious performance benefit to the unsafe user
accessors.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Catalin Marinas 2019-03-01 14:19:06 +00:00

parent 366e37e4da

commit 3cd0ddb3de

1 changed files with 20 additions and 59 deletions

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arch/arm64/include/asm/uaccess.h

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