freebsd-dev/sys/x86
John Baldwin 92597e064b On some Intel CPUs with a P-state but not C-state invariant TSC the TSC
may also halt in C2 and not just C3 (it seems that in some cases the BIOS
advertises its C3 state as a C2 state in _CST).  Just play it safe and
disable both C2 and C3 states if a user forces the use of the TSC as the
timecounter on such CPUs.

PR:		192316
Differential Revision:	https://reviews.freebsd.org/D1441
No objection from:	jkim
MFC after:	1 week
2015-01-05 20:44:44 +00:00
..
acpica MFamd64: Add support for extended FPU states on i386. This includes 2014-11-02 22:58:30 +00:00
bios Add missing header needed by free(9). 2012-09-30 15:42:20 +00:00
cpufreq Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
include Improve support for XSAVE with debuggers. 2014-11-21 20:53:17 +00:00
iommu Follow up to r225617. In order to maximize the re-usability of kernel code 2014-10-16 18:04:43 +00:00
isa Virtual machines can easily have more than 16 option ROMs and 2014-10-22 01:37:32 +00:00
pci Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
x86 On some Intel CPUs with a P-state but not C-state invariant TSC the TSC 2015-01-05 20:44:44 +00:00
xen Fix warning about possible use of uninitialized variable. 2015-01-02 08:42:44 +00:00