On 22/04/16 14:57, Michael Neuling wrote:
When detaching contexts, we may still have interrupts in the system
which are yet to be delivered to any CPU and be acked in the PSL.
This can result in a subsequent unrelated process getting an spurious
IRQ or an interrupt for a non-existent context.
This polls the PSL to ensure that the PSL is clear of IRQs for the
detached context, before removing the context from the idr.
Signed-off-by: Michael Neuling <[email protected]>
Tested on top of 4.6-rc3 using the genwqe-echo test utility[0].
Tested-by: Andrew Donnellan <[email protected]>
[0]
https://github.com/ibm-genwqe/genwqe-user/blob/master/tools/genwqe_echo.c
--
Andrew Donnellan OzLabs, ADL Canberra
[email protected] IBM Australia Limited
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