Re: [PATCH v3 09/10] KVM: s390: Fix ordering when adding to SCA

[Steffen Eiden]

On Mon, Jul 27, 2026 at 05:02:53PM +0200, Claudio Imbrenda wrote:
> When adding a new vCPU to the SCA area, the validity bit in the MCN was
> set before the pointer to the state description, potentially allowing
> for a race.
> 
> Fix by setting the pointer before setting the bit.
> 
> Fixes: 14542a0a54c5 ("KVM: S390: Remove sca_lock")
> Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

Reviewed-by: Steffen Eiden <seiden@xxxxxxxxxxxxx>