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Date: Thu, 31 May 2018 22:30:49 +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: <20180531213048.GB30406@jamesdev>
References: <alpine.DEB.2.00.1805161306260.10896@tp.orcam.me.uk>
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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+
> Fixes: bbd426f542cb ("MIPS: Simplify FP context access")
> Signed-off-by: Maciej W. Rozycki <macro@mips.com>
> ---
> Hi,
>=20
>  Here's another one, spotted in the course of GDB PR gdb/22286 regression=
=20
> testing with the n64 ABI.  Please apply.
>=20
>   Maciej

Thanks, applied to mips-fixes, hopefully for 4.17 (but if it misses
tomorrows linux-next it may have to wait 'til 4.18).

Cheers
James

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