[PATCH v2] aarch64: vdso: Wire up getrandom() vDSO implementation

[Mark Brown]

On Thu, Aug 29, 2024 at 08:17:14PM +0000, Adhemerval Zanella wrote:
> Hook up the generic vDSO implementation to the aarch64 vDSO data page.
> The _vdso_rng_data required data is placed within the _vdso_data vvar
> page, by using a offset larger than the vdso_data.

This exposes some preexisting compiler warnings in the getrandom test
when built with clang:

vdso_test_getrandom.c:145:40: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions]
  145 | static void *test_vdso_getrandom(void *)
      |                                        ^
vdso_test_getrandom.c:155:40: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions]
  155 | static void *test_libc_getrandom(void *)
      |                                        ^
vdso_test_getrandom.c:165:43: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions]
  165 | static void *test_syscall_getrandom(void *)
      |                                           ^

which it'd be good to get fixed before merging.
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