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From: Dave Hansen <dave.hansen@intel.com>
To: "Li, Liang Z" <liang.z.li@intel.com>,
	Andrea Arcangeli <aarcange@redhat.com>
Cc: "mhocko@suse.com" <mhocko@suse.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"mst@redhat.com" <mst@redhat.com>,
	"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	"kirill.shutemov@linux.intel.com"
	<kirill.shutemov@linux.intel.com>,
	"pbonzini@redhat.com" <pbonzini@redhat.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"virtualization@lists.linux-foundation.org"
	<virtualization@lists.linux-foundation.org>,
	"dgilbert@redhat.com" <dgilbert@redhat.com>
Subject: Re: [Qemu-devel] [PATCH kernel v5 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
Date: Thu, 8 Dec 2016 20:53:00 -0800	[thread overview]
Message-ID: <060287c7-d1af-45d5-70ea-ad35d4bbeb84@intel.com> (raw)
In-Reply-To: <F2CBF3009FA73547804AE4C663CAB28E3A14E2AD@SHSMSX104.ccr.corp.intel.com>

On 12/08/2016 08:45 PM, Li, Liang Z wrote:
> What's the conclusion of your discussion? It seems you want some
> statistic before deciding whether to  ripping the bitmap from the
> ABI, am I right?

I think Andrea and David feel pretty strongly that we should remove the
bitmap, unless we have some data to support keeping it.  I don't feel as
strongly about it, but I think their critique of it is pretty valid.  I
think the consensus is that the bitmap needs to go.

The only real question IMNHO is whether we should do a power-of-2 or a
length.  But, if we have 12 bits, then the argument for doing length is
pretty strong.  We don't need anywhere near 12 bits if doing power-of-2.

  parent reply	other threads:[~2016-12-09  4:53 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1480495397-23225-1-git-send-email-liang.z.li@intel.com>
2016-11-30  8:43 ` [PATCH kernel v5 1/5] virtio-balloon: rework deflate to add page to a list Liang Li
2016-11-30  8:43 ` [PATCH kernel v5 2/5] virtio-balloon: define new feature bit and head struct Liang Li
2016-11-30  8:43 ` [PATCH kernel v5 3/5] virtio-balloon: speed up inflate/deflate process Liang Li
2016-11-30  8:43 ` [PATCH kernel v5 4/5] virtio-balloon: define flags and head for host request vq Liang Li
2016-11-30  8:43 ` [PATCH kernel v5 5/5] virtio-balloon: tell host vm's unused page info Liang Li
     [not found] ` <1480495397-23225-6-git-send-email-liang.z.li@intel.com>
2016-11-30 19:15   ` Dave Hansen
     [not found]   ` <438dd41a-fdf1-2a77-ef9c-8c103f492b2f@intel.com>
2016-12-04 13:13     ` Li, Liang Z
     [not found]     ` <F2CBF3009FA73547804AE4C663CAB28E3A12D814@shsmsx102.ccr.corp.intel.com>
2016-12-05 17:22       ` Dave Hansen
2016-12-06  4:47         ` Li, Liang Z
2016-12-06  8:40 ` [PATCH kernel v5 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration David Hildenbrand
2016-12-07 13:35   ` Li, Liang Z
     [not found]   ` <F2CBF3009FA73547804AE4C663CAB28E3A130C01@shsmsx102.ccr.corp.intel.com>
2016-12-07 15:34     ` Dave Hansen
2016-12-07 15:42     ` David Hildenbrand
     [not found]     ` <0b18c636-ee67-cbb4-1ba3-81a06150db76@redhat.com>
2016-12-07 15:45       ` Dave Hansen
2016-12-07 16:21         ` David Hildenbrand
2016-12-07 16:57           ` Dave Hansen
     [not found]           ` <d3ff453c-56fa-19de-317c-1c82456f2831@intel.com>
2016-12-07 18:38             ` [Qemu-devel] " Andrea Arcangeli
     [not found]             ` <20161207183817.GE28786@redhat.com>
2016-12-07 18:44               ` Dave Hansen
     [not found]               ` <3954fe69-15ac-43eb-e14b-e2bfe976be33@intel.com>
2016-12-07 18:58                 ` Andrea Arcangeli
2016-12-07 19:54               ` Dave Hansen
2016-12-07 20:28                 ` Andrea Arcangeli
     [not found]                 ` <20161207202824.GH28786@redhat.com>
2016-12-09  4:45                   ` Li, Liang Z
     [not found]                   ` <F2CBF3009FA73547804AE4C663CAB28E3A14E2AD@SHSMSX104.ccr.corp.intel.com>
2016-12-09  4:53                     ` Dave Hansen [this message]
2016-12-09  5:35                       ` Li, Liang Z
2016-12-09 16:42                         ` Andrea Arcangeli
2016-12-14  8:20                           ` Li, Liang Z
2016-12-14  8:59                       ` Li, Liang Z
2016-12-15 15:34                         ` Dave Hansen
     [not found]                         ` <01886693-c73e-3696-860b-086417d695e1@intel.com>
2016-12-15 15:54                           ` Michael S. Tsirkin
2016-12-16  0:48                           ` Li, Liang Z
2016-12-16  1:09                             ` Dave Hansen
     [not found]                             ` <f517bfbe-18b8-6962-5c57-545f6ef47ad0@intel.com>
2016-12-16  1:38                               ` Li, Liang Z
2016-12-16  1:40                                 ` Dave Hansen
2016-12-16  1:43                                   ` Li, Liang Z
2016-12-16 16:01                                   ` Andrea Arcangeli
2016-12-17 12:39                                     ` Li, Liang Z
     [not found]                           ` <20161215173901-mutt-send-email-mst@kernel.org>
2016-12-16  1:12                             ` Li, Liang Z
2016-12-16 15:40                               ` Andrea Arcangeli
     [not found]                               ` <20161216154049.GB6168@redhat.com>
2016-12-17 11:56                                 ` Li, Liang Z
     [not found]     ` <f7b47cc4-ee94-bacb-5a17-d049b402263e@intel.com>
2016-12-09  3:09       ` Li, Liang Z

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