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Date:   Fri, 24 Aug 2018 13:32:51 -0700
From:   Guenter Roeck <linux@roeck-us.net>
To:     Roland Dreier <roland@purestorage.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Ben Hutchings <ben.hutchings@codethink.co.uk>,
        LKML <linux-kernel@vger.kernel.org>, stable@vger.kernel.org,
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        Andy Lutomirski <luto@amacapital.net>, luto@kernel.org,
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        brgerst@gmail.com, davej@codemonkey.org.uk, dvlasenk@redhat.com,
        "H. Peter Anvin" <hpa@zytor.com>,
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        Thomas Gleixner <tglx@linutronix.de>, toshi.kani@hp.com,
        linux-efi@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
        Yazen.Ghannam@amd.com,
        Guillaume Tucker <guillaume.tucker@collabora.com>
Subject: Re: [PATCH 4.4 103/105] Revert "x86/mm/pat: Ensure cpa->pfn only
 contains page frame numbers"
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On Fri, Aug 24, 2018 at 01:16:18PM -0700, Roland Dreier wrote:
> > Sounds great. I'll hold off with sending my RFT series and wait for your
> > test results. I think we'll also need d367cef0a7f0c6 ("x86/mm/pat: Fix
> > boot crash when 1GB pages are not supported by the CPU").
> 
> Sure, makes sense - I don't have any EFI systems with CPUs old enough
> not to support 1G pages but that looks reasonable.  I'll pull that
> into my tree as well.
> 
kernelci reported a crash on a CPU which doesn't support 1G pages.
See https://kernelci.org/boot/id/5b7d39ea59b514c03796ba9c/

Guenter