Re: [Xen-devel] [RFC PATCH 16/31] arm: add SMC wrapper that is compatible with SMCCC

[Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>]

On Tue, Dec 5, 2017 at 7:08 PM, Volodymyr Babchuk
<volodymyr_babchuk@xxxxxxxx> wrote:
> Hi Julien,
Hi Julien, Volodymyr.

>
> On 05.12.17 16:58, Julien Grall wrote:
>>
>> Hi Oleksandr,
>>
>> On 09/11/17 17:10, Oleksandr Tyshchenko wrote:
>>>
>>> From: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
>>>
>>> Existing SMC wrapper call_smc() allows only 4 parameters and
>>> returns only one value. This is enough for existing
>>> use in PSCI code, but TEE mediator will need a call that is
>>> fully compatible with ARM SMCCC.
>>> This patch adds this call for both arm32 and arm64.
>>>
>>> There was similar patch by Edgar E. Iglesias ([1]), but looks
>>> like it is abandoned.
>>>
>>> [1]
>>> https://lists.xenproject.org/archives/html/xen-devel/2017-02/msg00636.html
>>>
>>> CC: "Edgar E. Iglesias" <edgar.iglesias@xxxxxxxxxx>
>>>
>>> Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
>>> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
>>> CC: Julien Grall <julien.grall@xxxxxxxxxx>
>>
>>
>> This patch was sent by Volodymyr a month ago (see [2]) and I had comments
>> on it. I would appreciate if you address them.
>
> I can address your comments and send it as a separate patch to the ML.
That would be really great! I will be able to apply and test on ARM64.

> Will it be fine?
>
> WBR
> --
> Volodymyr



-- 
Regards,

Oleksandr Tyshchenko

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