Re: [Xen-devel] [PATCH v5 10/30] ARM: vGICv3: introduce ITS emulation stub

[Julien Grall <julien.grall@xxxxxxx>]

Hi Andre,

On 06/04/17 00:19, Andre Przywara wrote:
> +/*
> + * Data structure to describe a virtual ITS.
> + * If both the vcmd_lock and the its_lock are required, the vcmd_lock must
> + * be taken first.
> + */
> +struct virt_its {
> +    struct domain *d;
> +    unsigned int devid_bits;
> +    unsigned int intid_bits;
> +    spinlock_t vcmd_lock;       /* Protects the virtual command buffer, which 
> */
> +    uint64_t cwriter;           /* consists of CBASER and CWRITER and those   
> */
s/CBASER/CREADER/

> +    uint64_t creadr;            /* shadow variables cwriter and creadr. */
> +    /* Protects the rest of this structure, including the ITS tables. */
> +    spinlock_t its_lock;
> +    uint64_t cbaser;
> +    uint64_t baser_dev, baser_coll;     /* BASER0 and BASER1 for the guest */
> +    unsigned int max_collections;
> +    unsigned int max_devices;
> +    bool enabled;
> +};
Cheers,

--
Julien Grall

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