linux-kernel - Re: [PATCH 4.4 29/63] watchdog: hpwdt: fix unused variable warning

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Message-ID: <20180318101416.GD13276@kroah.com>
Date:   Sun, 18 Mar 2018 11:14:16 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Jerry Hoemann <jerry.hoemann@....com>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Guenter Roeck <linux@...ck-us.net>,
        Wim Van Sebroeck <wim@...ana.be>
Subject: Re: [PATCH 4.4 29/63] watchdog: hpwdt: fix unused variable warning

On Fri, Mar 16, 2018 at 04:55:37PM -0600, Jerry Hoemann wrote:
> 
> Greg,
> 
> Sorry, if I'm missing something, but I see 3 patches for
> hpwdt queued up for 4.4:
> 
> 	queue-4.4/watchdog-hpwdt-fix-unused-variable-warning.patch
> 	queue-4.4/watchdog-hpwdt-smbios-check.patch
> 	queue-4.4/watchdog-hpwdt-check-source-of-nmi.patch
> 
> 
> Shouldn't there also be a 4.4 patch for
> 
> 	commit 2b3d89b402b085b08498e896c65267a145bed486
> 	watchdog: hpwdt: Remove legacy NMI sourcing.
> 
> As there was for 4.15, 4.14, and 4.9?

It does not apply to the 4.4.y kernel branch.  If you feel it should be
there, please provide a working backport.

> commit 2b3d89b40 is the Spectre related patch.

If you look closely, not many Spectre-related patches are merged into
4.4.y as no one has taken the time to do the backporting.  I thought
someone was working on this, but odds are they just moved to 4.9.y or
4.14.y as everyone really should if they care about these issues with
their platforms.

So if you care about Spectre, I strongly recommend using 4.14.y or
newer.

thanks,

greg k-h