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Date: Sun, 4 Feb 2018 12:06:24 +0100
From: Greg KH <greg@kroah.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: stable@vger.kernel.org, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH v4.4 backport 15/16] powerpc/64s: Wire up
 cpu_show_meltdown()
Message-ID: <20180204110624.GJ7519@kroah.com>
References: <20180204050010.13669-1-mpe@ellerman.id.au>
 <20180204050010.13669-16-mpe@ellerman.id.au>
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On Sun, Feb 04, 2018 at 04:00:09PM +1100, Michael Ellerman wrote:
> commit fd6e440f20b1a4304553775fc55938848ff617c9 upstream.
> 
> The recent commit 87590ce6e373 ("sysfs/cpu: Add vulnerability folder")
> added a generic folder and set of files for reporting information on
> CPU vulnerabilities. One of those was for meltdown:
> 
>   /sys/devices/system/cpu/vulnerabilities/meltdown
> 
> This commit wires up that file for 64-bit Book3S powerpc.
> 
> For now we default to "Vulnerable" unless the RFI flush is enabled.
> That may not actually be true on all hardware, further patches will
> refine the reporting based on the CPU/platform etc. But for now we
> default to being pessimists.
> 
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

Also applied to 4.9.y and 4.14.y, thanks.

greg k-h