Re: [PATCH 11/13] powerpc: Add support to mask perf interrupts and replay them

On Thu, 15 Sep 2016 18:32:01 +0530
Madhavan Srinivasan [off-list ref] wrote:

To support masking of the PMI interrupts, couple of new interrupt handler
macros are added MASKABLE_EXCEPTION_PSERIES_OOL and
MASKABLE_RELON_EXCEPTION_PSERIES_OOL.

Couple of new irq #defs "PACA_IRQ_PMI" and "SOFTEN_VALUE_0xf0*" added to
use in the exception code to check for PMI interrupts.

In the masked_interrupt handler, for PMIs we reset the MSR[EE]
and return. In the __check_irq_replay(), replay the PMI interrupt
by calling performance_monitor_common handler.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>