Konstantin Belousov ff326a1879 x86: Restore the critical section around whole ipi_bitmap_handler() if ... hardclock IPI is delivered. In the current code after r355311, critical section is taken only around hardclockintr() call, and sched_preempt() is called after the section is exited. If we reschedule after exit, as we typically would due to conditions that caused IPI, in ULE the runq tdq_ipipending is not cleared, which blocks generation of further preempt IPIs. Since all relatively modern (10 years) hardware has per-cpu event timers, restoring the critical section conditionally does not affect it. Reported and tested by: cy Diagnosed and reviewed by: jeff (previous version) Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D22716		2019-12-07 00:28:08 +00:00
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acpica	Extract eventfilter declarations to sys/_eventfilter.h	2019-05-20 00:38:23 +00:00
bios	sys/x86: further adoption of SPDX licensing ID tags.	2017-11-27 15:11:47 +00:00
conf	Floppy driver really only works on x86	2019-08-12 22:58:50 +00:00
cpufreq	Extract eventfilter declarations to sys/_eventfilter.h	2019-05-20 00:38:23 +00:00
include	bus_dma_dmar_load_ident(9): load identity mapping into the map.	2019-11-27 19:57:17 +00:00
iommu	Fix a few places that free a page from an object without busy held. This is	2019-12-02 22:42:05 +00:00
isa	Fix amd64/i386 LINT build after r344982	2019-03-11 19:46:15 +00:00
pci	Add pci_early function to detect Intel stolen memory.	2018-10-31 23:17:00 +00:00
x86	x86: Restore the critical section around whole ipi_bitmap_handler() if	2019-12-07 00:28:08 +00:00
xen	xen: fix dispatching of NMIs	2019-11-12 10:31:28 +00:00