linux-kernel - Re: [PATCH] tee: ACPI support for optee driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <59C36E18.1050106@huawei.com>
Date:   Thu, 21 Sep 2017 15:45:28 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Mayuresh Chitale <mchitale@....com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-acpi@...r.kernel.org>, <jens.wiklander@...aro.org>
CC:     <patches@....com>
Subject: Re: [PATCH] tee: ACPI support for optee driver

On 2017/9/21 15:12, Mayuresh Chitale wrote:
> This patch modifies the optee driver to add support for parsing
> the conduit method from an ACPI node.

Sorry I didn't involve this earlier, but I think this is a wrong
approach, in ACPI 5.1+ spec, there is a bit in FADT table which
indicates PSCI using SMC or HVC, please see ACPI 6.2 [1],
Table 5-37 Fixed ACPI Description Table ARM Boot Architecture Flags.

Can we just use that to get the conduit method for optee driver too?

[1]: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf

Thanks
Hanjun