Re: [Xen-devel] [PATCH v3 0/3] arch/arm: optee: fix TODOs and change status to "Tech Preview"

[Julien Grall <julien.grall@xxxxxxx>]

Hi Volodymyr,

On 24/09/2019 16:46, Volodymyr Babchuk wrote:
> This is the third version of maturing the OP-TEE mediator patches.
>
> Changes also can be pulled from [3].
>
> Changes from v2:
>   - The following 3 patches were commited:
>   xen/arm: optee: impose limit on shared buffer size
>   xen/arm: optee: check for preemption while freeing shared buffers
>   xen/arm: optee: limit number of shared buffers
>   - Other changes are described in the corresponding patches
>
> Changes from v1:
>   - Added patch that updates SUPPORT.md
>   - Instead of removing "experimental" status I changed it to "Tech Preview"
>   - Other changes are described in the corresponding patches
>
> Cover letter for v1:
>
> This patch series fixes various unfinished items in the OP-TEE mediator.
> Mostly this is about limiting resources that guest can consume. This
> includes both memory and time - how many buffers guest can share with
> OP-TEE (this uses Xen memory) and when mediator should preempt itself,
> to make sure that guest does not stress scheduling.
>
> Apart from this, there were one case, when mediator's actions might lead
> to memory leak in a good-behaving guest. To fix this issue I had to
> extend mediator logic, so now it can issue RPC requests to guest in the
> same way, as OP-TEE does this. This is useful feature, because it
> allows to preempt mediator during long operations. So, in the future
> it will be possible to remove shared buffer size limitation, because
> mediator can preempt self during buffer translation.
>
> This patch series can be pulled from [1].
>
> [1] https://github.com/lorc/xen/tree/optee3_v1
> [2] https://github.com/lorc/xen/tree/optee3_v2
> [3] https://github.com/lorc/xen/tree/optee3_v3
>
>
> Volodymyr Babchuk (3):
>    xen/arm: optee: handle shared buffer translation error
>    SUPPORT.md: Describe OP-TEE mediator
>    xen/arm: optee: update description in Kconfig
The series is now merged. Thank you for the contribution!

Cheers,

--
Julien Grall

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