linux-kernel - Re: [PATCH 4.4 103/105] Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers"

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Message-ID: <CAL1RGDXa2POjmrr8UK-2oYyQtxYxiOs5t9BrpGUHRXqkDjMW5w@mail.gmail.com>
Date:   Fri, 24 Aug 2018 13:16:18 -0700
From:   Roland Dreier <roland@...estorage.com>
To:     linux@...ck-us.net
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org,
        matt@...eblueprint.co.uk, bp@...e.de,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>, luto@...nel.org,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>, bp@...en8.de,
        brgerst@...il.com, davej@...emonkey.org.uk, dvlasenk@...hat.com,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        sai.praneeth.prakhya@...el.com, sds@...ho.nsa.gov,
        Thomas Gleixner <tglx@...utronix.de>, toshi.kani@...com,
        linux-efi@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Yazen.Ghannam@....com
Subject: Re: [PATCH 4.4 103/105] Revert "x86/mm/pat: Ensure cpa->pfn only
 contains page frame numbers"

> 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.

 - R.