Re: [PATCH v3 18/52] KVM: PPC: Book3S HV P9: Move SPRG restore to restore_p9_host_os_sprs

[Fabiano Rosas]

Nicholas Piggin <npig...@gmail.com> writes:

> Move the SPR update into its relevant helper function. This will
> help with SPR scheduling improvements in later changes.
>
> Signed-off-by: Nicholas Piggin <npig...@gmail.com>

Reviewed-by: Fabiano Rosas <faro...@linux.ibm.com>

> ---
>  arch/powerpc/kvm/book3s_hv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
> index 1c5b81bd02c1..fca89ed2244f 100644
> --- a/arch/powerpc/kvm/book3s_hv.c
> +++ b/arch/powerpc/kvm/book3s_hv.c
> @@ -4093,6 +4093,8 @@ static void save_p9_host_os_sprs(struct p9_host_os_sprs 
> *host_os_sprs)
>  static void restore_p9_host_os_sprs(struct kvm_vcpu *vcpu,
>                                   struct p9_host_os_sprs *host_os_sprs)
>  {
> +     mtspr(SPRN_SPRG_VDSO_WRITE, local_paca->sprg_vdso);
> +
>       mtspr(SPRN_PSPB, 0);
>       mtspr(SPRN_UAMOR, 0);
>
> @@ -4293,8 +4295,6 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, 
> u64 time_limit,
>
>       timer_rearm_host_dec(tb);
>
> -     mtspr(SPRN_SPRG_VDSO_WRITE, local_paca->sprg_vdso);
> -
>       kvmppc_subcore_exit_guest();
>
>       return trap;