Eric van Gyzen ba0ced82ea Fix handling of NMIs from unknown sources (BMC, hypervisor) ... Release kernels have no KDB backends enabled, so they discard an NMI if it is not due to a hardware failure. This includes NMIs from IPMI BMCs and hypervisors. Furthermore, the interaction of panic_on_nmi, kdb_on_nmi, and debugger_on_panic is confusing. Respond to all NMIs according to panic_on_nmi and debugger_on_panic. Remove kdb_on_nmi. Expand the meaning of panic_on_nmi by making it a bitfield. There are currently two bits: one for NMIs due to hardware failure, and one for all others. Leave room for more. If panic_on_nmi and debugger_on_panic are both true, don't actually panic, but directly enter the debugger, to allow someone to leave the debugger and [hopefully] resume normal execution. Reviewed by: kib MFC after: 2 weeks Relnotes: yes: machdep.kdb_on_nmi is gone; machdep.panic_on_nmi changed Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D24558		2020-04-26 00:41:29 +00:00
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acpica	Fix IBRS for machines with IBRS_ALL capability.	2020-02-25 17:26:10 +00:00
bios	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
conf	Floppy driver really only works on x86	2019-08-12 22:58:50 +00:00
cpufreq	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
include	Fix IBRS for machines with IBRS_ALL capability.	2020-02-25 17:26:10 +00:00
iommu	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
isa	Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)	2020-02-26 14:26:36 +00:00
pci	Add pci_early function to detect Intel stolen memory.	2018-10-31 23:17:00 +00:00
x86	Fix handling of NMIs from unknown sources (BMC, hypervisor)	2020-04-26 00:41:29 +00:00
xen	xen: fix dispatching of NMIs	2019-11-12 10:31:28 +00:00