[PATCH v3 09/19] KVM: arm64: ITS: Interpret MAPD ITT_addr field

[Andre Przywara]

On 06/03/17 11:34, Eric Auger wrote:
> Up to now the MAPD ITT_addr had been ignored. We will need it
> for save/restore. Let's record it in the its_device struct.
> 
> Signed-off-by: Eric Auger <eric.auger at redhat.com>
> ---
>  virt/kvm/arm/vgic/vgic-its.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
> index 56bcd92..694023f 100644
> --- a/virt/kvm/arm/vgic/vgic-its.c
> +++ b/virt/kvm/arm/vgic/vgic-its.c
> @@ -99,6 +99,7 @@ struct its_device {
>  
>  	/* the head for the list of ITTEs */
>  	struct list_head itt_head;
> +	gpa_t itt_addr;
>  	u32 nb_eventid_bits;
>  	u32 device_id;
>  };
> @@ -562,6 +563,7 @@ static u64 its_cmd_mask_field(u64 *its_cmd, int word, int shift, int size)
>  #define its_cmd_get_collection(cmd)	its_cmd_mask_field(cmd, 2,  0, 16)
                            --> here?
>  #define its_cmd_get_target_addr(cmd)	its_cmd_mask_field(cmd, 2, 16, 32)
>  #define its_cmd_get_validbit(cmd)	its_cmd_mask_field(cmd, 2, 63,  1)
> +#define its_cmd_get_ittaddr(cmd)	its_cmd_mask_field(cmd, 2, 8,  44)

Can you please move this up ^
And adjust the spacing to align the commas?
(heavily influenced by suppressed OCD today ;-)

>  #define its_cmd_get_size(cmd)		its_cmd_mask_field(cmd, 1, 0,  5)
>  
>  /*
> @@ -832,6 +834,7 @@ static int vgic_its_cmd_handle_mapd(struct kvm *kvm, struct vgic_its *its,
>  	u32 device_id = its_cmd_get_deviceid(its_cmd);
>  	bool valid = its_cmd_get_validbit(its_cmd);
>  	size_t size = its_cmd_get_size(its_cmd);
> +	gpa_t itt_addr = its_cmd_get_ittaddr(its_cmd);

And do the "<< 8" already here?

Cheers,
Andre.

>  	struct its_device *device;
>  
>  	if (!vgic_its_check_id(its, its->baser_device_table, device_id))
> @@ -862,6 +865,7 @@ static int vgic_its_cmd_handle_mapd(struct kvm *kvm, struct vgic_its *its,
>  		return -ENOMEM;
>  
>  	device->device_id = device_id;
> +	device->itt_addr = itt_addr << 8;
>  	device->nb_eventid_bits = size + 1;
>  
>  	INIT_LIST_HEAD(&device->itt_head);
>