K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2019-04-09T19:22:08.619241Z
K 7
svn:log
V 718
Don't pre-reserve resources for CPU devices when they are set.

CPUs can use shared (RF_SHAREABLE) resources for the I/O port used for
entering and exiting C states.  If this I/O port is included in an ACPI
system resource device, then this happens to still work, but if the port
wasn't part of a system resource device, only the first CPU could allocate
the I/O port and use C states since resource_list_reserve() was always
allocating the resource from nexus0 without RF_SHAREABLE.  By avoiding
the reservation, the flags from the bus_alloc_resource() in the CPU driver
(which include RF_SHAREABLE) are honored.

PR:		236513
Reported by:	stockhausen@collogia.de
Sleuthing by:	avg
Reviewed by:	avg
MFC after:	2 weeks

END