The generate_guest_id function is more suitable for use after the
following modifications.
1. The return value of the function is modified to u64.
2. Remove the d_info1 and d_info2 parameters from the function, keep the
u64 type kernel_version parameter.
3. Rename the function to make it clearly a Hyper-V related function,
and modify it to hv_generate_guest_id.
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220928064046.3545-1-kunyu@nfschina.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
return 0;
/* Setup the guest ID */
- guest_id = generate_guest_id(0, LINUX_VERSION_CODE, 0);
+ guest_id = hv_generate_guest_id(LINUX_VERSION_CODE);
hv_set_vpreg(HV_REGISTER_GUEST_OSID, guest_id);
/* Get the features and hints from Hyper-V */
* 1. Register the guest ID
* 2. Enable the hypercall and register the hypercall page
*/
- guest_id = generate_guest_id(0, LINUX_VERSION_CODE, 0);
+ guest_id = hv_generate_guest_id(LINUX_VERSION_CODE);
wrmsrl(HV_X64_MSR_GUEST_OS_ID, guest_id);
/* Hyper-V requires to write guest os id via ghcb in SNP IVM. */
}
/* Generate the guest OS identifier as described in the Hyper-V TLFS */
-static inline __u64 generate_guest_id(__u64 d_info1, __u64 kernel_version,
- __u64 d_info2)
+static inline u64 hv_generate_guest_id(u64 kernel_version)
{
- __u64 guest_id = 0;
+ u64 guest_id;
- guest_id = (((__u64)HV_LINUX_VENDOR_ID) << 48);
- guest_id |= (d_info1 << 48);
+ guest_id = (((u64)HV_LINUX_VENDOR_ID) << 48);
guest_id |= (kernel_version << 16);
- guest_id |= d_info2;
return guest_id;
}