Re: [PATCH v3 0/2] KVM: arm64: nv: Shadow S2 life-cycle fixes

On Fri, Aug 21, 2026 at 05:18:27PM +0100, Marc Zyngier wrote:
> This is the (hopefully) last revision for this set of fixes for the
> shadow S2 life cycle.
> 
> * From v2 [1]
> 
>   - Fixed the nonsensical type used for allocating the nested S2
>     array, switching to kvmalloc_objs() in the process, guaranteeing
>     some level of type checking
> 
>   - Dropped the extra S2 freeing after Wei-Lin pointed out that we are
>     guaranteed to run the MMU notifier release callback, ensuring that
>     nothing is left behind
> 
>   - Collected AB from Lorenzo, with thanks.
> 
> [1] https://lore.kernel.org/all/[email protected]/
> 
> Marc Zyngier (2):
>   KVM: arm64: nv: Fix life cycle of the nested_mmus array
>   KVM: arm64: nv: Delay freeing of shadow S2 structures until VM
>     destruction
> 
>  arch/arm64/include/asm/kvm_host.h   |   2 +-
>  arch/arm64/include/asm/kvm_nested.h |   3 +-
>  arch/arm64/kvm/arm.c                |   8 ++-
>  arch/arm64/kvm/nested.c             | 100 ++++++++++++++--------------
>  4 files changed, 58 insertions(+), 55 deletions(-)
> 
> -- 
> 2.47.3
> 

Reviewed-by: Wei-Lin Chang <[email protected]>