On Thu, Nov 06, 2025 at 11:01:53AM +0100, Thomas Weißschuh wrote:

The generic vDSO provides a lot common functionality shared between
different architectures. SPARC is the last architecture not using it,
preventing some necessary code cleanup.

Make use of the generic infrastructure.

---
Changes in v5:
- Merge the patches for 'struct page' mapping and dynamic allocation
- Zero out newly-allocated data pages
- Pick up review tags
- Link to v4: https://lore.kernel.org/r/20251014-vdso-sparc64-generic-2-v4-0-e0607bf49dea@linutronix.de (local)

I've validated that the zeroing fixes the issues we were seeing with
boot failures on a reasonable chunk of the arm64 platforms:

Tested-by: Mark Brown <broonie@kernel.org>

I didn't get to all of them but I'd expect the rest are also fine.