The generate_guest_id function is more suitable for use after the
following modifications.
1. Modify the type of the guest_id variable to u64, which is compatible
with the caller.
2. Remove all parameters from the function, and write the parameter
(LINUX_VERSION_CODE) passed in by the actual call into the function
implementation.
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@xxxxxxxxxxxx>
--------
v2: Fix generate_guest_id to hv_generate_guest_id.
v3: Fix [PATCH v2] asm-generic: Remove the ... to [PATCH v3] hyperv: simp
lify ... and remove extra spaces
v4: Remove #include <linux/version.h> in the calling file, and add #inclu
de <linux/version.h> in the function implementation file
v5: <linux/version.h> is changed to the definition position before v4, an
d the LINUX_VERSION_CODE macro is passed in the function call
---
arch/arm64/hyperv/mshyperv.c | 2 +-
arch/x86/hyperv/hv_init.c | 2 +-
include/asm-generic/mshyperv.h | 9 +++------
3 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c
index bbbe351e9045..a406454578f0 100644
--- a/arch/arm64/hyperv/mshyperv.c
+++ b/arch/arm64/hyperv/mshyperv.c
@@ -38,7 +38,7 @@ static int __init hyperv_init(void)
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 */
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 3de6d8b53367..032d85ac33fa 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -426,7 +426,7 @@ void __init hyperv_init(void)
* 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. */
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index c05d2ce9b6cd..bfb9eb9d7215 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -105,15 +105,12 @@ static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
}
/* 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;
}
--
2.18.2
