Re: [Xen-devel] [PATCH 19/38] arm: context switch a bunch of guest state.

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Fri, 1 Jun 2012, Ian Campbell wrote:
> diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
> index 1a2b95f..339c327 100644
> --- a/xen/arch/arm/gic.c
> +++ b/xen/arch/arm/gic.c
> @@ -61,6 +61,30 @@ static struct {
>  irq_desc_t irq_desc[NR_IRQS];
>  unsigned nr_lrs;
> 
> +void gic_save_state(struct vcpu *v)
> +{
> +    int i;
> +
> +    for ( i=0; i<nr_lrs; i++)
> +        v->arch.gic_lr[i] = GICH[GICH_LR + i];
> +    /* Disable until next VCPU scheduled */
> +    GICH[GICH_HCR] = 0;
> +    isb();
> +}
> +
> +void gic_restore_state(struct vcpu *v)
> +{
> +    int i;
> +
> +    if ( is_idle_vcpu(v) )
> +        return;
> +
> +    for ( i=0; i<nr_lrs; i++)
> +        GICH[GICH_LR + i] = v->arch.gic_lr[i];
> +    GICH[GICH_HCR] = GICH_HCR_EN;
> +    isb();
> +}
> +

it is still missing a bunch of stuff from the gic state but it is a step
in the right direction, so I'll send out patches to complete the gic
context switch separately, based on this one.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel