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

From	Matthew Wilcox <mawilcox@microsoft.com>
Newsgroups	linux.kernel
Subject	RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2
Date	2016-08-19 04:00 +0200
Message-ID	<s7GWS-7sc-67@gated-at.bofh.it> (permalink)
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*Until* such a mechanism is in, I see no reason to not keep feature parity for all platforms.  This is the exact "You should boil the ocean" response that Arjan famously complained about at Kernel Summit a few years ago.

-----Original Message-----
From: Dan Williams [mailto:dan.j.williams@intel.com] 
Sent: Thursday, August 18, 2016 2:15 PM
To: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Matthew Wilcox <mawilcox@linuxonhyperv.com>; X86 ML <x86@kernel.org>; linux-kernel@vger.kernel.org; linux-nvdimm@lists.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@microsoft.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

Thread

Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Dan Williams <dan.j.williams@intel.com> - 2016-08-19 03:10 +0200
  Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Dan Williams <dan.j.williams@intel.com> - 2016-08-19 03:40 +0200
    RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation  2 Matthew Wilcox <mawilcox@microsoft.com> - 2016-08-19 04:00 +0200
      RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation  2 Matthew Wilcox <mawilcox@microsoft.com> - 2016-08-19 07:10 +0200
      Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Dan Williams <dan.j.williams@intel.com> - 2016-08-19 07:30 +0200
  RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation  2 Matthew Wilcox <mawilcox@microsoft.com> - 2016-08-19 03:50 +0200
    Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Dan Williams <dan.j.williams@intel.com> - 2016-08-19 03:50 +0200
      RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation  2 Matthew Wilcox <mawilcox@microsoft.com> - 2016-08-19 04:00 +0200
  RE: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation  2 Matthew Wilcox <mawilcox@microsoft.com> - 2016-08-19 03:50 +0200
    Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Dan Williams <dan.j.williams@intel.com> - 2016-08-19 04:50 +0200

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