powerpc/signal32: Convert do_setcontext[_tm]() to user access block

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Add unsafe_get_user_sigset() and transform PPC32 get_sigset_t()
into an unsafe version unsafe_get_sigset_t().

Then convert do_setcontext() and do_setcontext_tm() to use
user_read_access_begin/end.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9273ba664db769b8d9c7540ae91395e346e4945e.1616151715.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2021-03-19 11:06:58 +00:00 • committed by Michael Ellerman

parent 627b72bee8

commit 887f3ceb51

2 changed files with 26 additions and 18 deletions

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arch/powerpc/kernel/signal.h

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42

arch/powerpc/kernel/signal_32.c

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