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powerpc/64s: Un-blacklist system_call() from kprobes
authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Thu, 29 Jun 2017 17:49:18 +0000 (23:19 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 3 Jul 2017 13:12:01 +0000 (23:12 +1000)
commit3639d6619c249acf3b8ecc4fd4552486f217dec0
treec3a58958d2b6cac71919a7190793220424e0bdc9tree | snapshot (tar.gz zip)
parent266de3a842d70b481ef1dac487acfad1240deb7ecommit | diff
powerpc/64s: Un-blacklist system_call() from kprobes

It is actually safe to probe system_call() in entry_64.S, but only till
we unset MSR_RI. To allow this, add a new symbol system_call_exit()
after the mtmsrd and blacklist that.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/entry_64.S diff | blob | blame | history