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Re: [Xen-devel] [PATCH v10 00/12] Implement the XEN_DOMCTL_memory_mapping hypercall for ARM

On Wed, Aug 20, 2014 at 9:50 PM, Arianna Avanzini
<avanzini.arianna@xxxxxxxxx> wrote:
> On 18/08/2014 21:50, Andrii Tseglytskyi wrote:
>> Hi Arianna,
>> On Tue, Jul 29, 2014 at 1:11 AM, Arianna Avanzini
>> <avanzini.arianna@xxxxxxxxx> wrote:
>>> Hello,
>>> here I am finally with the tenth version of my implementation proposal for 
>>> the
>>> memory_mapping DOMCTL for the ARM architecture. As I did for the previous
>>> versions, I'll try to keep this cover letter as short as I can by listing 
>>> here
>>> only the most relevant changes, while a more detailed description can be 
>>> found
>>> in the description and changelog that comes with each of the patches. More
>>> detailed information about the patch series' genesis can be found in the 
>>> last
>>> full cover letter ([1]).
>>> Please note that the second and third patches of the v9 series have been 
>>> merged
>>> by Ian Campbell ([2]) as they resulted in an interface change that would 
>>> have
>>> clashed with other upcoming merges.
>>> Patch 0001 has been fixed according to directives given by Julien Grall and
>>> Ian Campbell; the main change is in the fact that now the ARM-related code
>>> handling the removal of an I/O-memory mapping follows a behavior which 
>>> matches
>>> the one introduced for x86 by patch 0003: in case the given machine frame
>>> number is mapped to an unexpected guest frame number, it emits a warning and
>>> still destroys the mapping.
>>> Patch 0002 has been modified according to suggestions given by Ian Campbell;
>>> now in case that the insertion of a new I/O-memory mapping fails (even if 
>>> only
>>> partially) the whole range is unmapped.
>>> Coding style issues existing in patch 0006 and pointed out by Jan Beulich 
>>> have
>>> been hopefully addressed here.
>>> A patch 0010 has been added that moves libxl's PCI-related macros, 
>>> previously
>>> kept in the libxl_pci.c file, to a header file.
>>> After some discussion involving Ian Campbell, Jan Beulich and Sander 
>>> Eikelenboom
>>> patch 0011 has been changed according to directives from Ian Campbell. Now 
>>> the
>>> I/O-memory areas needed to passthrough a VGA device in addition to 
>>> PCI-related
>>> ones are made accessible to any guest having gfx_passthru set to true in its
>>> config and at least one passthru PCI device having a device class of 
>>> 0x030000
>>> (which should identify it as a VGA device).
>>> The code has again been tested on a cubieboard2, with Linux v3.15-rc3 as a 
>>> dom0
>>> and ERIKA Enterprise ([3]) as a domU. The x86 bits have been tested on an 
>>> x86_64
>>> machine with Linux 3.15.0-rc5 as both dom0 and domU.
>>> Any feedback about this new version of the patchset is more than welcome,
>>> Arianna
>> Do you have any public repo, where can I cherry - pick your latest
>> patch series ?
> Unfortunately as of now I don't have any. However (I'm hoping it helps) I will
> be sending a new version of the patchset, updated for the latest head of the
> development repository, within this week.

Great. Thank you.

>> This series is very useful for development we do in GlobalLogic - we
>> have Android as domU, and we need iomem for such devices as GPU.
>> For now we are using one of your previous series - is works fine for
>> us. Platform is DRA7 (OMAP5)
> Thank you so much for providing feedback. Please do not hesitate to point out
> any issue you might have.



>> Also - I suppose - you are targeting this for Xen 4.5. Am I right ?
> Yes, you are right. I hope I'll be able to provide faster response to comments
> and reviews in the near future.
> Thank you,
> Arianna
>> Regards,
>> Andrii
>>> --
>>> 2.0.3
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@xxxxxxxxxxxxx
>>> http://lists.xen.org/xen-devel
> --
> /*
>  * Arianna Avanzini
>  * avanzini.arianna@xxxxxxxxx
>  * 73628@xxxxxxxxxxxxxxxxxxx
>  */


Andrii Tseglytskyi | Embedded Dev

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