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Date: Tue, 18 Jul 2017 17:26:15 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: pbonzini@redhat.com, paulus@ozlabs.org
Cc: stable@vger.kernel.org, stable-commits@vger.kernel.org
Subject: Re: Patch "kvm: avoid unused variable warning for UP builds" has
 been added to the 4.12-stable tree
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On Tue, Jul 18, 2017 at 05:16:06PM +0200, gregkh@linuxfoundation.org wrote:
> 
> This is a note to let you know that I've just added the patch titled
> 
>     kvm: avoid unused variable warning for UP builds
> 
> to the 4.12-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      kvm-avoid-unused-variable-warning-for-up-builds.patch
> and it can be found in the queue-4.12 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.
> 
> 
> >From b49defe83659cefbb1763d541e779da32594ab10 Mon Sep 17 00:00:00 2001
> From: Paolo Bonzini <pbonzini@redhat.com>
> Date: Fri, 30 Jun 2017 13:25:45 +0200
> Subject: kvm: avoid unused variable warning for UP builds
> 
> From: Paolo Bonzini <pbonzini@redhat.com>
> 
> commit b49defe83659cefbb1763d541e779da32594ab10 upstream.
> 
> The uniprocessor version of smp_call_function_many does not evaluate
> all of its argument, and the compiler emits a warning about "wait"
> being unused.  This breaks the build on architectures for which
> "-Werror" is enabled by default.
> 
> Work around it by moving the invocation of smp_call_function_many to
> its own inline function.
> 
> Reported-by: Paul Mackerras <paulus@ozlabs.org>
> Fixes: 7a97cec26b94c909f4cbad2dc3186af3e457a522
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Nope, this patch breaks the 4.12-stable build.  If you all want it
there, please provide a working backported patch.

thanks,

greg k-h