powerpc/tm: Fix 32 bit non-rt signals

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Currently sys_sigreturn() is TM unaware.  Therefore, if we take a 32 bit signal
without SIGINFO (non RT) inside a transaction, on signal return we don't
restore the signal frame correctly.

This checks if the signal frame being restoring is an active transaction, and
if so, it copies the additional state to ptregs so it can be restored.

Signed-off-by: Michael Neuling <mikey@neuling.org>
cc: stable@vger.kernel.org (v3.9+)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Michael Neuling 2013-06-09 21:23:16 +10:00 • committed by Benjamin Herrenschmidt

parent 1d25f11fdb

commit fee5545071

1 changed files with 25 additions and 5 deletions

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arch/powerpc/kernel/signal_32.c

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