Author: grehan
Date: Thu Mar 16 03:06:50 2017
New Revision: 315361
URL: https://svnweb.freebsd.org/changeset/base/315361
Log:
Add the AMD MONITORX/MWAITX feature definition introduced in
Bulldozer/Ryzen CPUs.
Reviewed by: kib
MFC after: 1 week
Modified:
head/sys/x86/include/specialreg.h
head/sys/x86/x86/identcpu.c
Modified: head/sys/x86/include/specialreg.h
==============================================================================
--- head/sys/x86/include/specialreg.h Thu Mar 16 02:31:42 2017
(r315360)
+++ head/sys/x86/include/specialreg.h Thu Mar 16 03:06:50 2017
(r315361)
@@ -227,6 +227,7 @@
#define AMDID2_DBE 0x04000000
#define AMDID2_PTSC 0x08000000
#define AMDID2_PTSCEL2I 0x10000000
+#define AMDID2_MWAITX 0x20000000
/*
* CPUID instruction 1 eax info
Modified: head/sys/x86/x86/identcpu.c
==============================================================================
--- head/sys/x86/x86/identcpu.c Thu Mar 16 02:31:42 2017 (r315360)
+++ head/sys/x86/x86/identcpu.c Thu Mar 16 03:06:50 2017 (r315361)
@@ -906,7 +906,7 @@ printcpuinfo(void)
"\033DBE" /* Data Breakpoint extension */
"\034PTSC" /* Performance TSC */
"\035PL2I" /* L2I perf count */
- "\036<b29>"
+ "\036MWAITX" /* MONITORX/MWAITX instructions
*/
"\037<b30>"
"\040<b31>"
);
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