Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [PATCH RFC 1/2] ACPI/PPTT: Add acpi_pptt_get_package_info() API
To:     Sudeep Holla <sudeep.holla@arm.com>
CC:     <rjw@rjwysocki.net>, <lenb@kernel.org>, <jeremy.linton@arm.com>,
        <arnd@arndb.de>, <olof@lixom.net>, <linux-kernel@vger.kernel.org>,
        <linux-acpi@vger.kernel.org>, <guohanjun@huawei.com>,
        <gregkh@linuxfoundation.org>
References: <1580210059-199540-1-git-send-email-john.garry@huawei.com>
 <1580210059-199540-2-git-send-email-john.garry@huawei.com>
 <20200128123415.GB36168@bogus> <20200130112338.GA54532@bogus>
From:   John Garry <john.garry@huawei.com>
Message-ID: <bfa7770b-d323-1f2a-98c8-44c2142c9124@huawei.com>
Date:   Thu, 30 Jan 2020 16:12:20 +0000
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101
 Thunderbird/68.1.2
MIME-Version: 1.0
In-Reply-To: <20200130112338.GA54532@bogus>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 30/01/2020 11:23, Sudeep Holla wrote:
>> I personally would not prefer to add the support when I know it is getting
>> deprecated. I am not sure on kernel community policy on the same.
>>
> OK, the details on the proposal to deprecate can be now found in UEFI
> bugzilla [1]
> 

Wouldn't it be a better approach to propose deprecating the field when 
there is a readily available alternative, i.e. not a spec from a 
different body in beta stage?

To me, this new SMC support will take an appreciable amount of time to 
be implemented in FW by SiPs when actually released. And if it requires 
an ATF upgrade - which I guess it does - then that's a big job.

Thanks,
John

> --
> Regards,
> Sudeep
> 
> [1]https://bugzilla.tianocore.org/show_bug.cgi?id=2492
> .