Re: [Xen-devel] [PATCH v4 07/17] xen/arm: ITS: Add virtual ITS commands support

[Vijay Kilari <vijay.kilari@xxxxxxxxx>]

>> +int vgic_its_process_cmd(struct vcpu *v, struct vgic_its *vits)
>> +{
>> +    its_cmd_block virt_cmd;
>> +
>> +    ASSERT(spin_is_locked(&vits->lock));
>> +
>> +    do {
>> +        if ( vgic_its_read_virt_cmd(v, vits, &virt_cmd) )
>> +            goto err;
>> +        if ( vgic_its_parse_its_command(v, vits, &virt_cmd) )
>> +            goto err;
>> +        vgic_its_update_read_ptr(v, vits);
>> +    } while ( vits->cmd_write != vits->cmd_write_save );
>
> I can't find anywhere other than here where vits->cmd_write is touched.
> What am I missing?

   It is written by guest by GITS_CWRITER emulation in patch #9

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