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Both functions initialize the `vdso_image` structure. This structure is defined in the two generated source code files: the [arch/x86/entry/vdso/vdso-image-64.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso-image-64.c) and the [arch/x86/entry/vdso/vdso-image-64.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso-image-64.c). These source code files generated by the [vdso2c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso2c.c) program from the different source code files, represent different approaches to call a system call like `int 0x80`, `sysenter` and etc. The full set of the images depends on the kernel configuration.
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Both functions initialize the `vdso_image` structure. This structure is defined in the two generated source code files: the [arch/x86/entry/vdso/vdso-image-64.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso-image-64.c) and the [arch/x86/entry/vdso/vdso-image-32.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso-image-32.c). These source code files generated by the [vdso2c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/vdso/vdso2c.c) program from the different source code files, represent different approaches to call a system call like `int 0x80`, `sysenter` and etc. The full set of the images depends on the kernel configuration.
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