freebsd-skq/sys/x86
Jim Harris 7bfcb3bb9b During TSC synchronization test, use rdtsc() rather than rdtsc32(), to
protect against 32-bit TSC overflow while the sync test is running.

On dual-socket Xeon E5-2600 (SNB) systems with up to 32 threads, there
is non-trivial chance (2-3%) that TSC synchronization test fails due to
32-bit TSC overflow while the synchronization test is running.

Sponsored by: Intel
Reviewed by: jkim
Discussed with: jkim, kib
2012-08-07 23:16:11 +00:00
..
acpica - Remove unused code for CR3 and CR4. 2012-06-13 22:53:56 +00:00
bios Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
cpufreq Fix apparent logic reversal in setting the 'auto_mode' flag. 2012-02-26 21:24:27 +00:00
include Add support for the XSAVEOPT instruction use. Our XSAVE/XRSTOR usage 2012-07-14 15:48:30 +00:00
isa Restore proper use of bounce buffers for ISA DMA. When locking was 2012-03-29 18:58:02 +00:00
pci Trim stray blank line. 2012-04-11 21:00:33 +00:00
x86 During TSC synchronization test, use rdtsc() rather than rdtsc32(), to 2012-08-07 23:16:11 +00:00