[PATCH v2 0/3] Reintroduce PROT_SAO

[Michael Ellerman]

On Fri, 21 Aug 2020 13:55:55 -0500, Shawn Anastasio wrote:
> Changes in v2:
>     - Update prot_sao selftest to skip ISA 3.1
> 
> This set re-introduces the PROT_SAO prot flag removed in
> Commit 5c9fa16e8abd ("powerpc/64s: Remove PROT_SAO support").
> 
> To address concerns regarding live migration of guests using SAO
> to P10 hosts without SAO support, the flag is disabled by default
> in LPARs. A new config option, PPC_PROT_SAO_LPAR was added to
> allow users to explicitly enable it if they will not be running
> in an environment where this is a conern.
> 
> [...]

Applied to powerpc/fixes.

[1/3] Revert "powerpc/64s: Remove PROT_SAO support"
      https://git.kernel.org/powerpc/c/12564485ed8caac3c18572793ec01330792c7191
[2/3] powerpc/64s: Disallow PROT_SAO in LPARs by default
      https://git.kernel.org/powerpc/c/9b725a90a8f127802e19466d4e336e701bcea0d2
[3/3] selftests/powerpc: Update PROT_SAO test to skip ISA 3.1
      https://git.kernel.org/powerpc/c/24ded46f53f954b9cf246c5d4e3770c7a8aa84ce

cheers