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In-Reply-To: <20180104143710.8961-1-dwmw@amazon.co.uk>
References: <1515058213.12987.89.camel@amazon.co.uk> <20180104143710.8961-1-dwmw@amazon.co.uk>
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 4 Jan 2018 10:03:17 -0800
Message-ID: <CAADWXX9f9Gg5HGu6nAuss+ME6jpJqqQ6J9OsLXi2X1Yfyoa6dw@mail.gmail.com>
Subject: Re: [PATCH v3 01/13] x86/retpoline: Add initial retpoline support
To: David Woodhouse <dwmw@amazon.co.uk>
Cc: ak@linux.intel.com, Paul Turner <pjt@google.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linux-foundation.org>,
        Tim Chen <tim.c.chen@linux.intel.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Kees Cook <keescook@google.com>,
        Rik van Riel <riel@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@amacapital.net>,
        Jiri Kosina <jikos@kernel.org>, gnomes@lxorguk.ukuu.org.uk
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org

David,
 these are all marked as spam, because your emails have screwed up
DKIM. You used

    From: David Woodhouse <dwmw@amazon.co.uk>

but then you used infradead as a mailer, so it has the DKIM signature
from infradead, not from Amazon.co.uk.

The DKIM signature does pass for infradead, but amazon dmarc - quite
reasonably - wants the from to match.

End result:

       dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=QUARANTINE)
header.from=amazon.co.uk

and everything was in spam.

Please don't do this. There's enough spam in the world that we don't
need people mis-configuring their emails and making real emails look
like spam too.

               Linus

On Thu, Jan 4, 2018 at 6:36 AM, David Woodhouse <dwmw@amazon.co.uk> wrote:
> Enable the use of -mindirect-branch=thunk-extern in newer GCC, and provide
> the corresponding thunks. Provide assembler macros for invoking the thunks
> in the same way that GCC does, from native and inline assembler.