Re: [PATCH 22/27] Add fields to PACA

[Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>]

On Wed, 2009-10-21 at 17:03 +0200, Alexander Graf wrote:
> For KVM we need to store some information in the PACA, so we
> need to extend it.
> 
> This patch adds KVM SLB shadow related entries to the PACA and
> a field that indicates if we're inside a guest.
> 
> Signed-off-by: Alexander Graf <agraf-l3A5Bk7waGM@public.gmane.org>
> ---

Acked-by: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>

>  arch/powerpc/include/asm/paca.h |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
> index 7d8514c..5e9b4ef 100644
> --- a/arch/powerpc/include/asm/paca.h
> +++ b/arch/powerpc/include/asm/paca.h
> @@ -129,6 +129,15 @@ struct paca_struct {
>  	u64 system_time;		/* accumulated system TB ticks */
>  	u64 startpurr;			/* PURR/TB value snapshot */
>  	u64 startspurr;			/* SPURR value snapshot */
> +
> +#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
> +	struct  {
> +		u64     esid;
> +		u64     vsid;
> +	} kvm_slb[64];			/* guest SLB */
> +	u8 kvm_slb_max;			/* highest used guest slb entry */
> +	u8 kvm_in_guest;		/* are we inside the guest? */
> +#endif
>  };
>  
>  extern struct paca_struct paca[];