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hw/psi-p9: Mask OPAL-owned LSIs without handlers
Some versions of Swift have the TPM interrupt line of the second chip pulled up instead of down. This causes the PSI's external (TPM) interrupt to constantly re-fire since it's an LSI and the interrupt signal is constantly active. There's nothing that can be done to clear the underlying interrupt condition so we to ensure that it's masked. The problem isn't really specific to the external interrupt and will occur for any of the PSI interrupts that don't have an actual handler (FSP, global error, and sometimes the external). When one of these is delivered to OPAL we should log that it happened and mask it to prevent re-firing. Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
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