https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240475
Bug ID: 240475
Summary: [PATCH]: Add support for CPUID 0x16 in
tsc_freq_cpuid() (TSC clock)
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: n...@neelc.org
Created attachment 207346
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=207346&action=edit
Patch (Revision 1)
Keep in mind that I am new to the kernel.
Description:
If frequency for CPUID 0x15 is zero, fall back to CPUID 0x16 for the TSC clock
if available. This is needed on some Intel SOCs like Skylake and Kaby Lake
whcih report 0 for the crystal clock..
Inspired by Linux commit 604dc9170f2435d27da5039a3efd757dceadc684.
Tested on the HP Spectre x360 13-ap0043dx running 13-CURRENT with an accurate
clock using this patch (without the patch, the ticks are slower).
--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
freebsd-bugs@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-bugs
To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
