1 #ifndef _ASM_X86_MSHYPER_H
2 #define _ASM_X86_MSHYPER_H
4 #include <linux/types.h>
5 #include <linux/interrupt.h>
6 #include <asm/hyperv.h>
8 struct ms_hyperv_info
{
14 extern struct ms_hyperv_info ms_hyperv
;
17 * Declare the MSR used to setup pages used to communicate with the hypervisor.
19 union hv_x64_msr_hypercall_contents
{
24 u64 guest_physical_address
:52;
29 * The guest OS needs to register the guest ID with the hypervisor.
30 * The guest ID is a 64 bit entity and the structure of this ID is
31 * specified in the Hyper-V specification:
33 * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
35 * While the current guideline does not specify how Linux guest ID(s)
36 * need to be generated, our plan is to publish the guidelines for
37 * Linux and other guest operating systems that currently are hosted
38 * on Hyper-V. The implementation here conforms to this yet
39 * unpublished guidelines.
43 * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
44 * 62:56 - Os Type; Linux is 0x100
45 * 55:48 - Distro specific identification
46 * 47:16 - Linux kernel version number
47 * 15:0 - Distro specific identification
52 #define HV_LINUX_VENDOR_ID 0x8800
55 * Generate the guest ID based on the guideline described above.
58 static inline __u64
generate_guest_id(__u64 d_info1
, __u64 kernel_version
,
63 guest_id
= (((__u64
)HV_LINUX_VENDOR_ID
) << 56);
64 guest_id
|= (d_info1
<< 48);
65 guest_id
|= (kernel_version
<< 16);
71 void hyperv_callback_vector(void);
73 #define trace_hyperv_callback_vector hyperv_callback_vector
75 void hyperv_vector_handler(struct pt_regs
*regs
);
76 void hv_setup_vmbus_irq(void (*handler
)(void));
77 void hv_remove_vmbus_irq(void);
79 void hv_setup_kexec_handler(void (*handler
)(void));
80 void hv_remove_kexec_handler(void);
81 void hv_setup_crash_handler(void (*handler
)(struct pt_regs
*regs
));
82 void hv_remove_crash_handler(void);