Re: [Xen-devel] [PATCH Altp2m cleanup 2/3 v12 1/3] Move altp2m specific functions to altp2m files.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 11.11.16 at 00:45, <paul.c.lai@xxxxxxxxx> wrote:
> @@ -66,6 +67,60 @@ altp2m_vcpu_destroy(struct vcpu *v)
>  }
>  
>  /*
> + *  allocate and initialize memory for altp2m portion of domain
> + *
> + *  returns < 0 on error
> + *  returns 0 on no operation & success
> + */
> +int
> +altp2m_domain_init(struct domain *d)
> +{
> +    int rc;
> +    unsigned int i;
> +
> +    if ( !hvm_altp2m_supported() )
> +        return 0;
> +
> +    /* Init alternate p2m data. */
> +    if ( (d->arch.altp2m_eptp = alloc_xenheap_page()) == NULL )
> +        return -ENOMEM;
> +
> +    for ( i = 0; i < MAX_EPTP; i++ )
> +        d->arch.altp2m_eptp[i] = mfn_x(INVALID_MFN);
> +
> +    for ( i = 0; i < MAX_ALTP2M; i++ )
> +    {
> +        rc = p2m_alloc_table(d->arch.altp2m_p2m[i]);
> +        if ( rc != 0 )
> +        {
> +            altp2m_domain_teardown(d);
> +            return rc;
> +        }
> +    }
> +
> +    d->arch.altp2m_active = 0;
> +
> +    return rc;
> +}

This new function has no caller, and hence does not replace any
existing code (rendering the description only partly correct).

Jan


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