x86: move stac/clac from user copy routines into callers

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This is preparatory work for inlining the 'rep movs' case, but also a
cleanup.  The __copy_user_nocache() function was mis-used by the rdma
code to do uncached kernel copies that don't actually want user copies
at all, and as a result doesn't want the stac/clac either.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Linus Torvalds 2023-04-15 13:39:15 -07:00

parent d2c95f9d68

commit 3639a53558

4 changed files with 15 additions and 12 deletions

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8

arch/x86/include/asm/uaccess_64.h

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10

arch/x86/lib/copy_user_64.S

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6

arch/x86/lib/usercopy_64.c

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3

tools/objtool/check.c

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