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Date: Fri, 26 Jan 2018 17:37:48 +0100
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: Borislav Petkov <bp@suse.de>, Hugh Dickins <hughd@google.com>,
        stable@vger.kernel.org
Subject: Re: [PATCH 4.4] vsyscall: Fix permissions for emulate mode with
 KAISER/PTI
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On Fri, Jan 26, 2018 at 04:23:02PM +0000, Ben Hutchings wrote:
> The backport of KAISER to 4.4 turned vsyscall emulate mode into native
> mode.  Add a vsyscall_pgprot variable to hold the correct page
> protections, like Borislav and Hugh did for 3.2 and 3.18.
> 
> Cc: Borislav Petkov <bp@suse.de>
> Cc: Hugh Dickins <hughd@google.com>
> Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
> ---
> I think this is also needed for 4.9 but haven't tested there.

Yeah, looks like 4.9 also needs this.  Thanks a lot for this, I didn't
think to look at the older backports recently.

greg k-h