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

Hi Julien,

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.
Will it be fine?


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