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Re: [PATCH for-4.15] tools/tests: Introduce a test for acquire_resource
- To: Oleksandr <olekstysh@xxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 4 Feb 2021 16:39:45 +0000
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On 04/02/2021 16:33, Oleksandr wrote:
> On 04.02.21 17:44, Andrew Cooper wrote:
>> On 04/02/2021 15:38, Oleksandr wrote:
>>>
>>>
>>> I got the following result without and with "[PATCH v9 01/11]
>>> xen/memory: Fix mapping grant tables with XENMEM_acquire_resource"
>>>
>>> root@generic-armv8-xt-dom0:~# test-resource
>>> XENMEM_acquire_resource tests
>>> Test ARM
>>> d3: grant table
>>> xenforeignmemory: error: ioctl failed: Invalid argument
>>> Fail: Get size: 22 - Invalid argument
>>>
>>
>> Ah yes - you also need a bugfix in the dom0 kernel. "xen/privcmd:
>> allow fetching resource sizes" which is in mainline, and also
>> backported to the LTS trees.
>
> Well, my dom0 Linux is old)
>
> uname -a
> Linux generic-armv8-xt-dom0 4.14.75-ltsi-yocto-tiny #1 SMP PREEMPT Thu
> Nov 5 10:52:32 UTC 2020 aarch64 GNU/Linux
> so I use ported "xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE".
> I didn't find "xen/privcmd: allow fetching resource sizes" for my
> Linux version, so I backported it by myself.
>
> So, with "[PATCH v9 01/11] xen/memory: Fix mapping grant tables with
> XENMEM_acquire_resource"
>
> root@generic-armv8-xt-dom0:~# test-resource
> XENMEM_acquire_resource tests
> Test ARM
> d7: grant table
> (XEN) grant_table.c:1854:d0v1 Expanding d7 grant table from 1 to 32 frames
> (XEN) grant_table.c:1854:d0v1 Expanding d7 grant table from 32 to 40
> frames
>
> [I didn't test without your patch]
>
> Hope that helps.
>
Yup - fantastic thankyou.
~Andrew
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