Hi Mykyta
Thank you for the contribution.
On Mon, Feb 2, 2026 at 6:14 PM Mykyta Poturai <Mykyta_Poturai@epam.com> wrote:
>
> Add GICv4 specific structures to be used in later patches.
>
> Signed-off-by: Mykyta Poturai <mykyta_poturai@epam.com>
> ---
> xen/arch/arm/include/asm/vgic.h | 43 +++++++++++++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
>
> diff --git a/xen/arch/arm/include/asm/vgic.h b/xen/arch/arm/include/asm/vgic.h
> index 6f9ab1c98c..a874a02d70 100644
> --- a/xen/arch/arm/include/asm/vgic.h
> +++ b/xen/arch/arm/include/asm/vgic.h
> @@ -127,6 +127,42 @@ struct vgic_irq_rank {
> uint8_t vcpu[32];
> };
>
> +#ifdef CONFIG_GICV4
> +struct its_vm {
> + struct its_vpe **vpes;
> + /* Number of VPE. */
> + unsigned int nr_vpes;
> + uint32_t *db_lpi_bases;
> + unsigned int nr_db_lpis;
> + /* Property table per VM. */
> + void *vproptable;
> +};
> +
> +struct its_vpe {
> + rwlock_t lock;
> + uint32_t vpe_id;
> + /* Pending table per VCPU. */
> + void *vpendtable;
> + uint32_t vpe_db_lpi;
> + struct its_vm *its_vm;
> + unsigned int col_idx;
> + bool resident;
> + /* Pending VLPIs on schedule out? */
> + bool pending_last;
> + struct {
> + /* Implementation Defined Area Invalid */
> + bool idai;
> + /* VPE proxy mapping */
> + int vpe_proxy_event;
> + };
> + /*
> + * Ensure mutual exclusion between affinity setting of the vPE
> + * and vLPI operations using vpe->col_idx.
> + */
> + spinlock_t vpe_lock;
> +};
> +#endif
> +
> struct vgic_dist {
> /* Version of the vGIC */
> enum gic_version version;
> @@ -193,6 +229,10 @@ struct vgic_dist {
> */
> bool rdists_enabled; /* Is any redistributor enabled? */
> bool has_its;
> +#ifdef CONFIG_GICV4
> + struct its_vm *its_vm;
> +#endif
> + bool nassgireq;
nit: unused in this series
Best regards,
Mykola
> #endif
> };
>
> @@ -227,6 +267,9 @@ struct vgic_cpu {
> #define VGIC_V3_RDIST_LAST (1 << 0) /* last vCPU of the rdist */
> #define VGIC_V3_LPIS_ENABLED (1 << 1)
> uint8_t flags;
> +#ifdef CONFIG_GICV4
> + struct its_vpe *its_vpe;
> +#endif
> };
>
> struct sgi_target {
> --
> 2.51.2