Re: [Xen-devel] [PATCH v8 20/21] xen/arm: Add a hypercall for device mmio mapping

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

On 2016/3/31 0:47, Julien Grall wrote:
> Hi,
> 
> On 30/03/16 17:11, Konrad Rzeszutek Wilk wrote:
>> On Wed, Mar 30, 2016 at 06:08:13PM +0800, Shannon Zhao wrote:
>>> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>>>
>>> It needs to map platform or amba device mmio to Dom0 on ARM. But when
>>> booting with ACPI, it can't get the mmio region in Xen due to lack of
>>> AML interpreter to parse DSDT table. Therefore, let Dom0 call a
>>> hypercall to map mmio region when it adds the devices.
>>>
>>> Here we add a new map space like the XEN_DOMCTL_memory_mapping to map
>>> mmio region for Dom0. Also add a helper to combine the
>>> xsm_add_to_physmap and XENMAPSPACE_dev_mmio space check together.
>>>
>>> Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
>>> Cc: Jan Beulich <jbeulich@xxxxxxxx>
>>> Cc: Keir Fraser <keir@xxxxxxx>
>>> Cc: Tim Deegan <tim@xxxxxxx>
>>> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>>> ---
>>> v8: add a helper to combine xsm_add_to_physmap and XENMAPSPACE_dev_mmio
>>> space check together
>>
>> I was by accident reviewing the earlier ersion. So let me give comments
>> here as well.
>> .. snipp.
> 
> Jan already applied the patch series to xengit/staging. Shannon, can you
> send a follow-up patch to fix at least the printk?
> 
Ok, will send a patch to fix the printk.

Thanks,
-- 
Shannon


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