x86: ia32_setup_sigcontext(): lift user_access_{begin,end}() into the callers

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What's left is just a sequence of stores to userland addresses, with all
error handling, etc. done out of line.  Calling that from user_access block
is safe, but rather than teaching objtool to recognize it as such we can
just make it always_inline - it is small enough and has few enough callers,
for the space savings not to be an issue.

	Rename the sucker to __unsafe_setup_sigcontext32() and provide
unsafe_put_sigcontext32() with usual kind of semantics.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2020-02-15 18:46:02 -05:00

parent 39f16c1c0f

commit 44a1d99632

1 changed files with 28 additions and 16 deletions

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arch/x86/ia32/ia32_signal.c

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