From 2420f6aed9e355ff65377152ba977b3a5ac441d1 Mon Sep 17 00:00:00 2001 From: Andrew Turner Date: Sun, 2 May 2021 07:43:34 +0000 Subject: [PATCH] Enable IPIs on CPU 0 on arm and arm64 Not all interrupt controllers enable IPIs by default as the Arm GIC specs make it an implementation defined option. As at least two hypervisors have also previously masked the IPIs on boot. As we already enable these IPIs on the non-boot CPUs it is expected this is a safe operation. Differential Revision: https://reviews.freebsd.org/D26975 --- sys/arm64/arm64/mp_machdep.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/arm64/arm64/mp_machdep.c b/sys/arm64/arm64/mp_machdep.c index 8d5d8287957..3b1a8cc89ca 100644 --- a/sys/arm64/arm64/mp_machdep.c +++ b/sys/arm64/arm64/mp_machdep.c @@ -364,6 +364,8 @@ intr_pic_ipi_setup(u_int ipi, const char *name, intr_ipi_handler_t *hand, ii->ii_send_arg = isrc; strlcpy(ii->ii_name, name, INTR_IPI_NAMELEN); ii->ii_count = intr_ipi_setup_counters(name); + + PIC_ENABLE_INTR(intr_irq_root_dev, isrc); } static void