svn commit: r363433 - in stable: 11/sys/x86/x86 12/sys/x86/x86
Author: jkim
Date: Wed Jul 22 21:17:02 2020
New Revision: 363433
URL: https://svnweb.freebsd.org/changeset/base/363433
Log:
MFC: r362509
Assume all TSCs are synchronized for AMD Family 17h processors and later
when it has passed the synchronization test.
Modified:
stable/11/sys/x86/x86/tsc.c
Directory Properties:
stable/11/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/12/sys/x86/x86/tsc.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/11/sys/x86/x86/tsc.c
==
--- stable/11/sys/x86/x86/tsc.c Wed Jul 22 21:06:32 2020(r363432)
+++ stable/11/sys/x86/x86/tsc.c Wed Jul 22 21:17:02 2020(r363433)
@@ -495,6 +495,13 @@ retry:
switch (cpu_vendor_id) {
case CPU_VENDOR_AMD:
/*
+* Processor Programming Reference (PPR) for AMD
+* Family 17h states that the TSC uses a common
+* reference for all sockets, cores and threads.
+*/
+ if (CPUID_TO_FAMILY(cpu_id) >= 0x17)
+ return (1000);
+ /*
* Starting with Family 15h processors, TSC clock
* source is in the north bridge. Check whether
* we have a single-socket/multi-core platform.
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svn commit: r363433 - in stable: 11/sys/x86/x86 12/sys/x86/x86
Author: jkim Date: Wed Jul 22 21:17:02 2020 New Revision: 363433 URL: https://svnweb.freebsd.org/changeset/base/363433 Log: MFC: r362509 Assume all TSCs are synchronized for AMD Family 17h processors and later when it has passed the synchronization test. Modified: stable/12/sys/x86/x86/tsc.c Directory Properties: stable/12/ (props changed) Changes in other areas also in this revision: Modified: stable/11/sys/x86/x86/tsc.c Directory Properties: stable/11/ (props changed) Modified: stable/12/sys/x86/x86/tsc.c == --- stable/12/sys/x86/x86/tsc.c Wed Jul 22 21:06:32 2020(r363432) +++ stable/12/sys/x86/x86/tsc.c Wed Jul 22 21:17:02 2020(r363433) @@ -530,6 +530,13 @@ retry: case CPU_VENDOR_AMD: case CPU_VENDOR_HYGON: /* +* Processor Programming Reference (PPR) for AMD +* Family 17h states that the TSC uses a common +* reference for all sockets, cores and threads. +*/ + if (CPUID_TO_FAMILY(cpu_id) >= 0x17) + return (1000); + /* * Starting with Family 15h processors, TSC clock * source is in the north bridge. Check whether * we have a single-socket/multi-core platform. ___ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
