Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754730AbaKRSEk (ORCPT ); Tue, 18 Nov 2014 13:04:40 -0500 Received: from foss-mx-na.foss.arm.com ([217.140.108.86]:60575 "EHLO foss-mx-na.foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752006AbaKRSEj (ORCPT ); Tue, 18 Nov 2014 13:04:39 -0500 Date: Tue, 18 Nov 2014 18:04:19 +0000 From: Catalin Marinas To: Konstantin Khlebnikov Cc: Russell King , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH RFC 2/3] ARM: enable TTBR0/TTBR1 split in short mode Message-ID: <20141118180418.GN28279@e104818-lin.cambridge.arm.com> References: <20141118165313.9958.1242.stgit@buzz> <20141118165319.9958.67009.stgit@buzz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141118165319.9958.67009.stgit@buzz> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 18, 2014 at 03:53:19PM +0000, Konstantin Khlebnikov wrote: > This feature was partially implemented long time ago. All cpus load > swapper_pg_dir into TTBR1 since commit d427958a46af24f75d0017c45eadd172273bbf33 > ("ARM: 6942/1: mm: make TTBR1 always point to swapper_pg_dir on ARMv6/7"). > But TTBRx split is never been enabled in TTBCR. I recall there is an erratum on Cortex-A9 around the use of TTBR1 and at the time that stopped me from pushing such change. -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/