From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: Re: [PATCH] arm64: Preserve the user r/w register tpidr_el0 on context switch and fork in compat mode Date: Tue, 5 May 2015 11:51:11 +0100 Message-ID: <20150505105111.GB1550@arm.com> References: <55464BB2.7030401@dawncrow.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from foss.arm.com ([217.140.101.70]:44373 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753400AbbEEKvR (ORCPT ); Tue, 5 May 2015 06:51:17 -0400 Content-Disposition: inline In-Reply-To: <55464BB2.7030401@dawncrow.de> Sender: linux-arch-owner@vger.kernel.org List-ID: To: =?iso-8859-1?Q?Andr=E9?= Hentschel Cc: "linux-arch@vger.kernel.org" , Russell King - ARM Linux , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "gregkh@linuxfoundation.org" , Jonathan Austin , Nathan Lynch On Sun, May 03, 2015 at 05:24:18PM +0100, Andr=E9 Hentschel wrote: > From: Andr=E9 Hentschel >=20 > Since commit a4780adeefd042482f624f5e0d577bf9cdcbb760 the user writea= ble TLS > register on ARM is preserved per thread. >=20 > This patch does it analogous to the ARM patch, but for compat mode on= ARM64. >=20 > Signed-off-by: Andr=E9 Hentschel > Cc: Will Deacon > Cc: Jonathan Austin =20 >=20 > --- > This patch is against Linux 4.1-rc1 (b787f68c36d49bb1d9236f403813641e= fa74a031) Curious, but why do you need this? iirc, we added this for arch/arm/ be= cause of some windows rt (?) emulation in wine. Is that still the case here a= nd is anybody actually using that? Will