From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753755AbeDREce (ORCPT ); Wed, 18 Apr 2018 00:32:34 -0400 Received: from mail-vk0-f44.google.com ([209.85.213.44]:38953 "EHLO mail-vk0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753165AbeDREcc (ORCPT ); Wed, 18 Apr 2018 00:32:32 -0400 X-Google-Smtp-Source: AIpwx48iLr1+N1rzcEkk7WjFpIzvMM3ZUm7SQOTgainrLf3vE54m7QXe4/p2Nzjmp8uChNWcXUyMhyOjcs23IaUqJkQ= MIME-Version: 1.0 X-Originating-IP: [62.219.136.235] In-Reply-To: <1523988865-26848-1-git-send-email-geert@linux-m68k.org> References: <1523988865-26848-1-git-send-email-geert@linux-m68k.org> From: Gilad Ben-Yossef Date: Wed, 18 Apr 2018 07:32:31 +0300 Message-ID: Subject: Re: [PATCH/RFC] crypto: Add platform dependencies for CRYPTO_DEV_CCREE To: Geert Uytterhoeven Cc: Herbert Xu , "David S . Miller" , Arnd Bergmann , Linux Crypto Mailing List , Linux kernel mailing list Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Geert, On Tue, Apr 17, 2018 at 9:14 PM, Geert Uytterhoeven wrote: > The ARM TrustZone CryptoCell is found on ARM SoCs only. Hence make it > depend on ARM or ARM64, unless compile-testing. > Actually it is not. Despite what the name suggest, CryptoCell is designed by Arm but is not in fact limited to Arm cores. I think the only requirement is ability to provide an AMBA bus interface. Kudos to our marketing department to make that so clear and so on... :-) There are in fact licensees of this IP which use it with other (Linux running) architectures, perhaps thanks to the fact that the design originated in an outside company (Discretix) which was bought by Arm. Therefore, NAK on the specific patch. However, if there is some build issue with a none Arm architecture I of course very interested to hear about it. Many thanks, Gilad -- Gilad Ben-Yossef Chief Coffee Drinker "If you take a class in large-scale robotics, can you end up in a situation where the homework eats your dog?" -- Jean-Baptiste Queru