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x86: Detect running on a Microsoft HyperV system

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This patch integrates HyperV detection within the framework currently
used by VmWare. With this patch, we can avoid having to replicate the
HyperV detection code in each of the Microsoft HyperV drivers.

Reworked and tweaked by Greg K-H to build properly.

Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
LKML-Reference: <20100506190841.GA1605@kroah.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Vadim Rozenfeld <vrozenfe@redhat.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "K.Prasad" <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Ky Srinivasan 2010-05-06 12:08:41 -07:00 • committed by H. Peter Anvin
parent 097c1bd567
commit a2a47c6c3d
6 changed files with 91 additions and 4 deletions
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3
arch/x86/include/asm/processor.h
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@ -114,6 +114,8 @@ struct cpuinfo_x86 {
u16 cpu_index;
#endif
unsigned int x86_hyper_vendor;
/* The layout of this field is hypervisor specific */
unsigned int x86_hyper_features;
} __attribute__((__aligned__(SMP_CACHE_BYTES)));
#define X86_VENDOR_INTEL 0
@ -129,6 +131,7 @@ struct cpuinfo_x86 {
#define X86_HYPER_VENDOR_NONE 0
#define X86_HYPER_VENDOR_VMWARE 1
#define X86_HYPER_VENDOR_MSFT 2
/*
* capabilities of CPUs