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Date:   Wed, 5 Oct 2022 13:05:47 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Borislav Petkov <bp@suse.de>
Cc:     ssengar@linux.microsoft.com, stable@vger.kernel.org
Subject: Re: FAILED: patch "[PATCH] x86/cacheinfo: Add a
 cpu_llc_shared_mask() UP variant" failed to apply to 5.15-stable tree
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On Wed, Oct 05, 2022 at 12:45:19PM +0200, Borislav Petkov wrote:
> On Mon, Oct 03, 2022 at 08:20:27AM +0200, gregkh@linuxfoundation.org wrote:
> > 
> > The patch below does not apply to the 5.15-stable tree.
> > If someone wants it applied there, or to any other stable or longterm
> > tree, then please email the backport, including the original git commit
> > id to <stable@vger.kernel.org>.
> > 
> > Possible dependencies:
> > 
> > df5b035b5683 ("x86/cacheinfo: Add a cpu_llc_shared_mask() UP variant")
> > 66558b730f25 ("sched: Add cluster scheduler level for x86")
> 
> This is a fix for CONFIG_SMP=n kernels which was caught by testing this
> explicitly by disabling SMP. IOW, I don't think anyone would be running
> SMP=n kernels and thus maybe should not backport those...?

Yeah, I agree, this doesn't look like a valid thing to backport, if
people had this issue in 5.15.y they would have already reported by now.

thanks,

greg k-h