linux-kernel - Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2

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Message-ID: <CAPcyv4gYODEgH+CjdL1JssVhCHf+-tTrxUxVSjd2inPcrisEKQ@mail.gmail.com>
Date:   Thu, 18 Aug 2016 11:15:10 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Matthew Wilcox <mawilcox@...rosoft.com>
Cc:     Matthew Wilcox <mawilcox@...uxonhyperv.com>,
        X86 ML <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>
Subject: Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2

On Thu, Aug 18, 2016 at 11:05 AM, Matthew Wilcox <mawilcox@...rosoft.com> wrote:
> I'd rather the memmap= option works on all platforms.  Unless we're going to get rid of it entirely and exclusively use ACPI tables, I see no good reason to leave this landmine lying around for someone else to blow their own leg off.
>

memmap= is already a landmine: https://lkml.org/lkml/2016/6/28/819

Killing memmap= in favor of NFIT is a better way to go.  I chatted
with Peter off list about this problem and he wondered about
re-purposing using the mBFT mechanism to define memory ranges:

http://omniboot.org/txt/syslinux/memdisk.txt