On Tue, 06 Jun 2023 23:24:41 +1000, Nicholas Piggin wrote:

Since v2:
- Add PPC_CREATE_STACK_FRAME() to abstract prologue differences.
- Build fix.
- Makefile tidy [Christophe]
- Fix a missing SOB.

Since v1:
- Don't re-order 32-bit prologue.
- Improve Kconfig conditional includes.
- Break out code changes into their own patches before merging,
  so merge patch leaves generated code unchanged.
- Change prom_entry.S to prom_entry_64.S.

[...]

Applied to powerpc/next.

[1/6] powerpc/64s: move stack SLB pinning out of line from _switch
      https://git.kernel.org/powerpc/c/d6b87c3eb6b2e0b34ba747df549e08768b019fe9
[2/6] powerpc/64: Rearrange 64-bit _switch to prepare for 32/64 merge
      https://git.kernel.org/powerpc/c/0eb8088b5a7524f96cadfb27083f5bdd819d9d52
[3/6] powerpc/32: Remove sync from _switch
      https://git.kernel.org/powerpc/c/fc8562c9b69af9533c39903b1601c378742189b0
[4/6] powerpc/32: Rearrange _switch to prepare for 32/64 merge
      https://git.kernel.org/powerpc/c/6958ad05d5789a303afe4fa4495df43993d9b7cb
[5/6] powerpc: merge 32-bit and 64-bit _switch implementation
      https://git.kernel.org/powerpc/c/afc6386815a88d067d9f567dcc6266800286f626
[6/6] powerpc/64: Rename entry_64.S to prom_entry_64.S
      https://git.kernel.org/powerpc/c/27be2456332dcd69907f086cda327ad923b222cf

cheers