From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-owner@vger.kernel.org>
Received: from mail.kernel.org ([198.145.29.99]:51024 "EHLO mail.kernel.org"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S964789AbeEXNAF (ORCPT <rfc822;stable@vger.kernel.org>);
        Thu, 24 May 2018 09:00:05 -0400
Date: Thu, 24 May 2018 14:00:00 +0100
From: James Hogan <jhogan@kernel.org>
To: "Maciej W. Rozycki" <macro@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org,
        linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] MIPS: ptrace: Fix PTRACE_PEEKUSR requests for 64-bit FGRs
Message-ID: <20180524125959.GB24269@jamesdev>
References: <alpine.DEB.2.00.1805161306260.10896@tp.orcam.me.uk>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
        protocol="application/pgp-signature"; boundary="3uo+9/B/ebqu+fSQ"
Content-Disposition: inline
In-Reply-To: <alpine.DEB.2.00.1805161306260.10896@tp.orcam.me.uk>
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>


--3uo+9/B/ebqu+fSQ
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Wed, May 16, 2018 at 04:39:58PM +0100, Maciej W. Rozycki wrote:
> Use 64-bit accesses for 64-bit floating-point general registers with=20
> PTRACE_PEEKUSR, removing the truncation of their upper halves in the=20
> FR=3D1 mode, caused by commit bbd426f542cb ("MIPS: Simplify FP context=20
> access"), which inadvertently switched them to using 32-bit accesses.
>=20
> The PTRACE_POKEUSR side is fine as it's never been broken and continues=
=20
> using 64-bit accesses.
>=20
> Cc: <stable@vger.kernel.org> # 3.19+

should that be 3.15+?

Cheers
James

--3uo+9/B/ebqu+fSQ
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iHUEARYIAB0WIQS7lRNBWUYtqfDOVL41zuSGKxAj8gUCWwa3TgAKCRA1zuSGKxAj
8sDvAP9b5xyZTvJTRL1ODiGao0nXlZE58CbdZGfh08Ld5eRiaAEAysXgF3YS4+nm
+cHSReh8L6LfjKCPbHrOsWEht17wgQY=
=+Mrn
-----END PGP SIGNATURE-----

--3uo+9/B/ebqu+fSQ--