Author: jkim
Date: Thu Apr 28 22:23:39 2011
New Revision: 221188
URL: http://svn.freebsd.org/changeset/base/221188
Log:
Define "Hypervisor Present" bit. This bit is used by several hypervisors to
identify CPUs running under emulation. Currently QEMU-KVM, Xen-HVM, VMware,
and MS Hyper-V are known to set this bit.
MFC after: 3 days
Modified:
head/sys/amd64/amd64/identcpu.c
head/sys/amd64/include/specialreg.h
head/sys/i386/i386/identcpu.c
head/sys/i386/include/specialreg.h
Modified: head/sys/amd64/amd64/identcpu.c
==============================================================================
--- head/sys/amd64/amd64/identcpu.c Thu Apr 28 22:21:53 2011
(r221187)
+++ head/sys/amd64/amd64/identcpu.c Thu Apr 28 22:23:39 2011
(r221188)
@@ -296,7 +296,7 @@ printcpuinfo(void)
"\035<b28>"
"\036<b29>"
"\037<b30>"
- "\040<b31>"
+ "\040HV" /* Hypervisor */
);
}
Modified: head/sys/amd64/include/specialreg.h
==============================================================================
--- head/sys/amd64/include/specialreg.h Thu Apr 28 22:21:53 2011
(r221187)
+++ head/sys/amd64/include/specialreg.h Thu Apr 28 22:23:39 2011
(r221188)
@@ -134,6 +134,7 @@
#define CPUID2_MOVBE 0x00400000
#define CPUID2_POPCNT 0x00800000
#define CPUID2_AESNI 0x02000000
+#define CPUID2_HV 0x80000000
/*
* Important bits in the Thermal and Power Management flags
Modified: head/sys/i386/i386/identcpu.c
==============================================================================
--- head/sys/i386/i386/identcpu.c Thu Apr 28 22:21:53 2011
(r221187)
+++ head/sys/i386/i386/identcpu.c Thu Apr 28 22:23:39 2011
(r221188)
@@ -773,7 +773,7 @@ printcpuinfo(void)
"\035<b28>"
"\036<b29>"
"\037<b30>"
- "\040<b31>"
+ "\040HV" /* Hypervisor */
);
}
Modified: head/sys/i386/include/specialreg.h
==============================================================================
--- head/sys/i386/include/specialreg.h Thu Apr 28 22:21:53 2011
(r221187)
+++ head/sys/i386/include/specialreg.h Thu Apr 28 22:23:39 2011
(r221188)
@@ -131,6 +131,7 @@
#define CPUID2_MOVBE 0x00400000
#define CPUID2_POPCNT 0x00800000
#define CPUID2_AESNI 0x02000000
+#define CPUID2_HV 0x80000000
/*
* Important bits in the Thermal and Power Management flags
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