Date: Mon, 8 Jan 2018 10:51:54 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Willy Tarreau <w@1wt.eu>,
        Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-arch@vger.kernel.org, Andi Kleen <ak@linux.intel.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Network Development <netdev@vger.kernel.org>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 06/18] x86, barrier: stop speculation for failed access_ok
Message-ID: <20180108095154.GD3040@hirez.programming.kicks-ass.net>
References: <20180106195551.3207f75d@alans-desktop>
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 <20180106230507.3547c9a0@alans-desktop>
 <20180107033812.awq3vz4gdkps7tix@ast-mbp>
 <20180107063356.GA9425@1wt.eu>
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On Sun, Jan 07, 2018 at 06:24:11PM -0800, Alexei Starovoitov wrote:
> How about:
> CONFIG_SPECTRE1_WORKAROUND_INDEX_MASK
> CONFIG_SPECTRE1_WORKAROUND_LOAD_FENCE

INSTRUCTION_FENCE if anything. LFENCE for Intel (and now also for AMD as
per 0592b0bce169) is a misnomer, IFENCE would be a better name for it.