powerpc: Add helper functions for transactional memory context switching
Here we add the helper functions to be used when context switching. These allow us to fully reclaim and recheckpoint a transaction. We introduce a new paca field called tm_scratch to help us store away register values when doing the low level tm reclaim register save. Signed-off-by: NMatt Evans <matt@ozlabs.org> Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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arch/powerpc/include/asm/tm.h
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arch/powerpc/kernel/tm.S
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