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
Date: Thu, 24 May 2018 14:00:00 +0100 [thread overview]
Message-ID: <20180524125959.GB24269@jamesdev> (raw)
In-Reply-To: <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
> PTRACE_PEEKUSR, removing the truncation of their upper halves in the
> FR=1 mode, caused by commit bbd426f542cb ("MIPS: Simplify FP context
> access"), which inadvertently switched them to using 32-bit accesses.
>
> The PTRACE_POKEUSR side is fine as it's never been broken and continues
> using 64-bit accesses.
>
> Cc: <stable@vger.kernel.org> # 3.19+
should that be 3.15+?
Cheers
James
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next prev parent reply other threads:[~2018-05-24 13:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-16 15:39 [PATCH] MIPS: ptrace: Fix PTRACE_PEEKUSR requests for 64-bit FGRs Maciej W. Rozycki
2018-05-16 15:39 ` Maciej W. Rozycki
2018-05-24 13:00 ` James Hogan [this message]
2018-05-24 16:51 ` Maciej W. Rozycki
2018-05-24 16:51 ` Maciej W. Rozycki
2018-05-24 17:02 ` Paul Burton
2018-05-24 17:02 ` Paul Burton
2018-05-31 21:30 ` James Hogan
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