Paul Mackerras d2bf3f3580 core: Implement hypervisor doorbell interrupt and msg* instructions ...

This implements the hypervisor doorbell exception and interrupt and
the msgsnd, msgclr and msgsync instructions (msgsync is a no-op).  The
msgsnd instruction can generate a hypervisor doorbell interrupt on any
CPU in the system.  To achieve this, each core sends its hypervisor
doorbell messages to the soc level, which ORs together the bits for
each CPU and sends it to that CPU.

The privileged doorbell exception/interrupt and the msgsndp/msgclrp
instructions are not required since we don't implement SMT.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

2025-08-09 12:13:44 +10:00

..

fmt_log.c

core: Implement hypervisor doorbell interrupt and msg* instructions

2025-08-09 12:13:44 +10:00

Makefile

Add core logging

2020-06-13 20:07:00 +10:00