Re: transparent huge pages breaks KVM on AMD.

From: Marc Haber <mh+linux-kernel@zugschlus.de>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "Dr. David Alan Gilbert" <dave@treblig.org>,
	Borislav Petkov <bp@alien8.de>,
	Paolo Bonzini <pbonzini@redhat.com>,
	linux-kernel@vger.kernel.org, kvm ML <kvm@vger.kernel.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: transparent huge pages breaks KVM on AMD.
Date: Fri, 13 May 2016 07:23:34 +0200	[thread overview]
Message-ID: <20160513052334.GE9143@torres.zugschlus.de> (raw)
In-Reply-To: <20160512204216.GA22695@node.shutemov.name>

On Thu, May 12, 2016 at 11:42:16PM +0300, Kirill A. Shutemov wrote:
> But I guess it should apply cleanly to v4.5. Or at least without major
> conflicts.

[11/511]mh@fan:~/linux/debug/linux$ curl 'http://marc.info/?l=linux-rdma&m=146307074800836&w=2' | patch -p1
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 12529    0 12529    0     0   9844      0 --:--:--  0:00:01 --:--:--  9849
patching file include/linux/mm.h
Hunk #1 succeeded at 456 with fuzz 1 (offset -44 lines).
patching file include/linux/swap.h
Hunk #2 FAILED at 513.
1 out of 2 hunks FAILED -- saving rejects to file include/linux/swap.h.rej
patching file mm/huge_memory.c
Hunk #1 FAILED at 1298.
Hunk #2 FAILED at 2079.
Hunk #3 succeeded at 3340 (offset 117 lines).
2 out of 3 hunks FAILED -- saving rejects to file mm/huge_memory.c.rej
patching file mm/memory.c
Hunk #1 FAILED at 2373.
Hunk #2 succeeded at 2331 with fuzz 2 (offset -56 lines).
Hunk #3 FAILED at 2622.
2 out of 3 hunks FAILED -- saving rejects to file mm/memory.c.rej
patching file mm/swapfile.c
Hunk #1 FAILED at 922.
1 out of 1 hunk FAILED -- saving rejects to file mm/swapfile.c.rej
[12/512]mh@fan:~/linux/debug/linux$

It doesn't, and it doesn't apply to 4.6-rc3 as well:

[17/517]mh@fan:~/linux/debug/linux$ git checkout v4.6-rc3
Checking out files: 100% (9945/9945), done.
Previous HEAD position was b562e44... Linux 4.5
HEAD is now at bf16200... Linux 4.6-rc3
[18/518]mh@fan:~/linux/debug/linux$ curl 'http://marc.info/?l=linux-rdma&m=146307074800836&w=2' | patch -p1
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 12529    0 12529    0     0   9692      0 --:--:--  0:00:01 --:--:--  9697
patching file include/linux/mm.h
patching file include/linux/swap.h
Hunk #2 FAILED at 513.
1 out of 2 hunks FAILED -- saving rejects to file include/linux/swap.h.rej
patching file mm/huge_memory.c
Hunk #1 FAILED at 1298.
Hunk #2 FAILED at 2079.
Hunk #3 succeeded at 3225 (offset 2 lines).
2 out of 3 hunks FAILED -- saving rejects to file mm/huge_memory.c.rej
patching file mm/memory.c
Hunk #1 FAILED at 2373.
Hunk #2 succeeded at 2354 (offset -33 lines).
Hunk #3 FAILED at 2622.
2 out of 3 hunks FAILED -- saving rejects to file mm/memory.c.rej
patching file mm/swapfile.c
Hunk #1 FAILED at 922.
1 out of 1 hunk FAILED -- saving rejects to file mm/swapfile.c.rej
[19/519]mh@fan:~/linux/debug/linux$

How do I apply this?

Greetings
Marc

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