Re: [Xen-devel] [PATCH v11 1/3] iommu VT-d: separate rmrr addition function

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 22.10.15 at 19:13, <elena.ufimtseva@xxxxxxxxxx> wrote:
> --- a/xen/drivers/passthrough/vtd/dmar.c
> +++ b/xen/drivers/passthrough/vtd/dmar.c
> @@ -583,6 +583,68 @@ out:
>      return ret;
>  }
>  
> +static int register_one_rmrr(struct acpi_rmrr_unit *rmrru)
> +{
> +    bool_t ignore = 0;
> +    unsigned int i = 0;
> +    int ret = 0;
> +
> +    /* Skip checking if segment is not accessible yet. */
> +    if ( !pci_known_segment(rmrru->segment) )
> +        i = UINT_MAX;
> +
> +    for ( ; i < rmrru->scope.devices_cnt; i++ )
> +    {
> +        u8 b = PCI_BUS(rmrru->scope.devices[i]);
> +        u8 d = PCI_SLOT(rmrru->scope.devices[i]);
> +        u8 f = PCI_FUNC(rmrru->scope.devices[i]);
> +
> +        if ( pci_device_detect(rmrru->segment, b, d, f) == 0 )
> +        {
> +            dprintk(XENLOG_WARNING VTDPREFIX,
> +                    " Non-existent device (%04x:%02x:%02x.%u) is reported"
> +                    " in RMRR (%"PRIx64", %"PRIx64")'s scope!\n",
> +                    rmrru->segment, b, d, f,
> +                    rmrru->base_address, rmrru->end_address);
> +            ignore = 1;
> +        }
> +        else
> +        {
> +            ignore = 0;
> +            break;
> +        }
> +    }
> +
> +    if ( ignore )
> +    {
> +        dprintk(XENLOG_WARNING VTDPREFIX,
> +                "  Ignore the RMRR (%"PRIx64", %"PRIx64") due to "
> +                "devices under its scope are not PCI discoverable!\n",
> +            rmrru->base_address, rmrru->end_address);

Broken indentation, but since everything else looks okay this can of
course be fixed up while committing, provided we can get a VT-d
maintainer ack.

Jan


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