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From: Richard Biener <richard.guenther@gmail.com>
Date: Thu, 17 Feb 2022 10:39:55 +0100
Message-ID: <CAFiYyc3PzG5-kO6ppvzK9Z6UH8gFFYyy=V=Q1KMKUh3Vi3swdg@mail.gmail.com>
Subject: Re: [wwwdocs PATCH] gcc-11.3: Mention -mharden-sls= and
 -mindirect-branch-cs-prefix
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>
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On Wed, Feb 16, 2022 at 3:42 PM H.J. Lu via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:

OK.

> ---
>  htdocs/gcc-11/changes.html | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html
> index fbd1b8ba..8e6d4ec8 100644
> --- a/htdocs/gcc-11/changes.html
> +++ b/htdocs/gcc-11/changes.html
> @@ -1129,6 +1129,13 @@ are not listed here).</p>
>      no longer changes how they are passed nor returned.  This ABI change
>      is now diagnosed with <code>-Wpsabi</code>.
>    </li>
> +  <li>Mitigation against straight line speculation (SLS) for function
> +      return and indirect jump is supported via
> +      <code>-mharden-sls=[none|all|return|indirect-jmp]</code>.
> +  </li>
> +  <li>Add CS prefix to call and jmp to indirect thunk with branch target
> +      in r8-r15 registers via <code>-mindirect-branch-cs-prefix</code>.
> +  </li>
>  </ul>
>
>  </body>
> --
> 2.35.1
>