From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH 00/16] remove eight obsolete architectures Date: Thu, 15 Mar 2018 07:17:49 -0700 Message-ID: <20180315141749.GA27100@infradead.org> References: <20180314143529.1456168-1-arnd@arndb.de> <2929.1521106970@warthog.procyon.org.uk> <6c9d075c-d7a8-72a5-9b2d-af1feaa06c6c@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Arnd Bergmann Cc: linux-arch , linux-block , linux-fbdev@vger.kernel.org, linux-watchdog@vger.kernel.org, "open list:DOCUMENTATION" , Networking , dri-devel , linux-usb@vger.kernel.org, linux-wireless , Linux Kernel Mailing List , linux-pwm@vger.kernel.org, linux-spi , David Howells , IDE-ML , Hannes Reinecke , "open list:HID CORE LAYER" , Linux FS-devel Mailing List , Linux-MM , linux-rtc@vger.kernel.org List-Id: linux-arch.vger.kernel.org T24gVGh1LCBNYXIgMTUsIDIwMTggYXQgMTE6NDI6MjVBTSArMDEwMCwgQXJuZCBCZXJnbWFubiB3 cm90ZToKPiBJcyBhbnlvbmUgcHJvZHVjaW5nIGEgY2hpcCB0aGF0IGluY2x1ZGVzIGVub3VnaCBv ZiB0aGUgUHJpdmlsZWdlZCBJU0Egc3BlYwo+IHRvIGhhdmUgdGhpbmdzIGxpa2Ugc3lzdGVtIGNh bGxzLCBidXQgbm90IHRoZSBNTVUgcGFydHM/CgpWYXJpb3VzIFNpRml2ZSBTT0NzIHNlZW0gdG8g c3VwcG9ydCBNIGFuZCBVIG1vZGUsIGJ1dCBubyBTIG1vZGUgb3IKaW9tbXUuICBUaGF0IHNob3Vs ZCBiZSBlbm91Z2ggZm9yIG5vbW11IExpbnV4IHJ1bm5pbmcgaW4gTSBtb2RlIGlmCnNvbWVvbmUg Y2FyZXMgZW5vdWdoIHRvIGFjdHVhbGx5IHBvcnQgaXQuCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVs QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWls bWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:49832 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751551AbeCOORx (ORCPT ); Thu, 15 Mar 2018 10:17:53 -0400 Date: Thu, 15 Mar 2018 07:17:49 -0700 From: Christoph Hellwig Subject: Re: [PATCH 00/16] remove eight obsolete architectures Message-ID: <20180315141749.GA27100@infradead.org> References: <20180314143529.1456168-1-arnd@arndb.de> <2929.1521106970@warthog.procyon.org.uk> <6c9d075c-d7a8-72a5-9b2d-af1feaa06c6c@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-arch-owner@vger.kernel.org List-ID: To: Arnd Bergmann Cc: Hannes Reinecke , David Howells , linux-arch , Linux Kernel Mailing List , "open list:DOCUMENTATION" , linux-block , IDE-ML , "open list:HID CORE LAYER" , Networking , linux-wireless , linux-pwm@vger.kernel.org, linux-rtc@vger.kernel.org, linux-spi , linux-usb@vger.kernel.org, dri-devel , linux-fbdev@vger.kernel.org, linux-watchdog@vger.kernel.org, Linux FS-devel Mailing List , Linux-MM Message-ID: <20180315141749.zkJkYPe7lcB7G1fLhPjlCej9Q5UkFM9BArh8cV18Pq0@z> On Thu, Mar 15, 2018 at 11:42:25AM +0100, Arnd Bergmann wrote: > Is anyone producing a chip that includes enough of the Privileged ISA spec > to have things like system calls, but not the MMU parts? Various SiFive SOCs seem to support M and U mode, but no S mode or iommu. That should be enough for nommu Linux running in M mode if someone cares enough to actually port it.