Konstantin Belousov 36596c2a29 Detect x2APIC mode on boot and obey it. ... If BIOS performed hand-off to OS with BSP LAPIC in the x2APIC mode, system usually consumes such configuration without a notice, since x2APIC is turned on by OS if possible (nop). But if BIOS simultaneously requested OS to not use x2APIC, code assumption that that xAPIC is active breaks. In my opinion, we cannot safely turn off x2APIC if control is passed in this mode. Make madt.c ignore user or BIOS requests to turn x2APIC off, and do not check the x2APIC black list. Just trust the config and try to continue, giving a warning in dmesg. Reported and tested by: Slawa Olhovchenkov <slw@zxy.spb.ru> (previous version) Diagnosed by and discussed with: avg Sponsored by: The FreeBSD Foundation MFC after: 2 weeks		2016-09-19 15:58:45 +00:00
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acpica	Detect x2APIC mode on boot and obey it.	2016-09-19 15:58:45 +00:00
bios
cpufreq	sys: replace comma with semicolon when pertinent.	2016-08-09 19:42:20 +00:00
include	Detect x2APIC mode on boot and obey it.	2016-09-19 15:58:45 +00:00
iommu	Add additional constants.	2016-08-09 19:02:14 +00:00
isa	Add an EARLY_AP_STARTUP option to start APs earlier during boot.	2016-05-14 18:22:52 +00:00
pci
x86	Detect x2APIC mode on boot and obey it.	2016-09-19 15:58:45 +00:00
xen	Detect x2APIC mode on boot and obey it.	2016-09-19 15:58:45 +00:00