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| author | H. Peter Anvin <hpa@zytor.com> | 2010-05-07 16:57:28 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-07 17:13:04 -0700 |
| commit | e08cae4181af9483b04ecfac48f01c8e5a5f27bf (patch) | |
| tree | 2cab8da747a6524694cc19f247d8bc4f157a601c /arch/x86/include/asm/hypervisor.h | |
| parent | 9fa02317429449e8176c9bb6da3ac00eb14d52d3 (diff) | |
| download | linux-0-day-e08cae4181af9483b04ecfac48f01c8e5a5f27bf.tar.gz linux-0-day-e08cae4181af9483b04ecfac48f01c8e5a5f27bf.tar.xz | |
x86: Clean up the hypervisor layer
Clean up the hypervisor layer and the hypervisor drivers, using an ops
structure instead of an enumeration with if statements.
The identity of the hypervisor, if needed, can be tested by testing
the pointer value in x86_hyper.
The MS-HyperV private state is moved into a normal global variable
(it's per-system state, not per-CPU state). Being a normal bss
variable, it will be left at all zero on non-HyperV platforms, and so
can generally be tested for HyperV-specific features without
additional qualification.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Greg KH <greg@kroah.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Ky Srinivasan <ksrinivasan@novell.com>
LKML-Reference: <4BE49778.6060800@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/hypervisor.h')
| -rw-r--r-- | arch/x86/include/asm/hypervisor.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h index b78c0941e4228..70abda7058c81 100644 --- a/arch/x86/include/asm/hypervisor.h +++ b/arch/x86/include/asm/hypervisor.h @@ -17,10 +17,33 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * */ -#ifndef ASM_X86__HYPERVISOR_H -#define ASM_X86__HYPERVISOR_H +#ifndef _ASM_X86_HYPERVISOR_H +#define _ASM_X86_HYPERVISOR_H extern void init_hypervisor(struct cpuinfo_x86 *c); extern void init_hypervisor_platform(void); +/* + * x86 hypervisor information + */ +struct hypervisor_x86 { + /* Hypervisor name */ + const char *name; + + /* Detection routine */ + bool (*detect)(void); + + /* Adjust CPU feature bits (run once per CPU) */ + void (*set_cpu_features)(struct cpuinfo_x86 *); + + /* Platform setup (run once per boot) */ + void (*init_platform)(void); +}; + +extern const struct hypervisor_x86 *x86_hyper; + +/* Recognized hypervisors */ +extern const struct hypervisor_x86 x86_hyper_vmware; +extern const struct hypervisor_x86 x86_hyper_ms_hyperv; + #endif |