From: Rik van Riel <riel@redhat.com>
To: Pankaj Gupta <pagupta@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>, Jan Kara <jack@suse.cz>,
Stefan Hajnoczi <stefanha@redhat.com>,
Stefan Hajnoczi <stefanha@gmail.com>,
kvm-devel <kvm@vger.kernel.org>,
Qemu Developers <qemu-devel@nongnu.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@ml01.01.org>,
ross zwisler <ross.zwisler@linux.intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Kevin Wolf <kwolf@redhat.com>,
Nitesh Narayan Lal <nilal@redhat.com>,
xiaoguangrong eric <xiaoguangrong.eric@gmail.com>,
Haozhong Zhang <haozhong.zhang@intel.com>,
Ross Zwisler <ross.zwisler@intel.com>
Subject: Re: KVM "fake DAX" flushing interface - discussion
Date: Wed, 26 Jul 2017 17:27:33 -0400 [thread overview]
Message-ID: <1501104453.26846.45.camel@redhat.com> (raw)
In-Reply-To: <1063764405.34607875.1501076841865.JavaMail.zimbra@redhat.com>
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On Wed, 2017-07-26 at 09:47 -0400, Pankaj Gupta wrote:
> >
> Just want to summarize here(high level):
>
> This will require implementing new 'virtio-pmem' device which
> presents
> a DAX address range(like pmem) to guest with read/write(direct
> access)
> & device flush functionality. Also, qemu should implement
> corresponding
> support for flush using virtio.
>
Alternatively, the existing pmem code, with
a flush-only block device on the side, which
is somehow associated with the pmem device.
I wonder which alternative leads to the least
code duplication, and the least maintenance
hassle going forward.
--
All rights reversed
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Pankaj Gupta <pagupta@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>, Jan Kara <jack@suse.cz>,
Stefan Hajnoczi <stefanha@redhat.com>,
Stefan Hajnoczi <stefanha@gmail.com>,
kvm-devel <kvm@vger.kernel.org>,
Qemu Developers <qemu-devel@nongnu.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@ml01.01.org>,
ross zwisler <ross.zwisler@linux.intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Kevin Wolf <kwolf@redhat.com>,
Nitesh Narayan Lal <nilal@redhat.com>,
xiaoguangrong eric <xiaoguangrong.eric@gmail.com>,
Haozhong Zhang <haozhong.zhang@intel.com>,
Ross Zwisler <ross.zwisler@intel.com>
Subject: Re: [Qemu-devel] KVM "fake DAX" flushing interface - discussion
Date: Wed, 26 Jul 2017 17:27:33 -0400 [thread overview]
Message-ID: <1501104453.26846.45.camel@redhat.com> (raw)
In-Reply-To: <1063764405.34607875.1501076841865.JavaMail.zimbra@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 662 bytes --]
On Wed, 2017-07-26 at 09:47 -0400, Pankaj Gupta wrote:
> >
> Just want to summarize here(high level):
>
> This will require implementing new 'virtio-pmem' device which
> presents
> a DAX address range(like pmem) to guest with read/write(direct
> access)
> & device flush functionality. Also, qemu should implement
> corresponding
> support for flush using virtio.
>
Alternatively, the existing pmem code, with
a flush-only block device on the side, which
is somehow associated with the pmem device.
I wonder which alternative leads to the least
code duplication, and the least maintenance
hassle going forward.
--
All rights reversed
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 473 bytes --]
next prev parent reply other threads:[~2017-07-26 21:27 UTC|newest]
Thread overview: 176+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1455443283.33337333.1500618150787.JavaMail.zimbra@redhat.com>
2017-07-21 6:56 ` KVM "fake DAX" flushing interface - discussion Pankaj Gupta
2017-07-21 6:56 ` [Qemu-devel] " Pankaj Gupta
2017-07-21 6:56 ` Pankaj Gupta
2017-07-21 9:51 ` Haozhong Zhang
2017-07-21 9:51 ` [Qemu-devel] " Haozhong Zhang
2017-07-21 9:51 ` Haozhong Zhang
2017-07-21 10:21 ` Pankaj Gupta
2017-07-21 10:21 ` [Qemu-devel] " Pankaj Gupta
2017-07-21 10:21 ` Pankaj Gupta
2017-07-21 12:12 ` Stefan Hajnoczi
2017-07-21 12:12 ` [Qemu-devel] " Stefan Hajnoczi
2017-07-21 13:29 ` Pankaj Gupta
2017-07-21 13:29 ` [Qemu-devel] " Pankaj Gupta
2017-07-21 13:29 ` Pankaj Gupta
2017-07-21 14:00 ` Rik van Riel
2017-07-21 14:00 ` [Qemu-devel] " Rik van Riel
2017-07-21 14:00 ` Rik van Riel
2017-07-21 15:58 ` Stefan Hajnoczi
2017-07-21 15:58 ` [Qemu-devel] " Stefan Hajnoczi
2017-07-22 19:34 ` Dan Williams
2017-07-22 19:34 ` [Qemu-devel] " Dan Williams
2017-07-22 19:34 ` Dan Williams
2017-07-23 14:04 ` Rik van Riel
2017-07-23 14:04 ` [Qemu-devel] " Rik van Riel
2017-07-23 14:04 ` Rik van Riel
2017-07-23 16:01 ` Dan Williams
2017-07-23 16:01 ` [Qemu-devel] " Dan Williams
2017-07-23 16:01 ` Dan Williams
2017-07-23 18:10 ` Rik van Riel
2017-07-23 18:10 ` [Qemu-devel] " Rik van Riel
2017-07-23 18:10 ` Rik van Riel
2017-07-23 20:10 ` Dan Williams
2017-07-23 20:10 ` [Qemu-devel] " Dan Williams
2017-07-23 20:10 ` Dan Williams
2017-07-24 10:23 ` Jan Kara
2017-07-24 10:23 ` [Qemu-devel] " Jan Kara
2017-07-24 10:23 ` Jan Kara
2017-07-24 12:06 ` Pankaj Gupta
2017-07-24 12:06 ` [Qemu-devel] " Pankaj Gupta
2017-07-24 12:06 ` Pankaj Gupta
2017-07-24 12:37 ` Jan Kara
2017-07-24 12:37 ` [Qemu-devel] " Jan Kara
2017-07-24 12:37 ` Jan Kara
2017-07-24 15:10 ` Dan Williams
2017-07-24 15:10 ` [Qemu-devel] " Dan Williams
2017-07-24 15:10 ` Dan Williams
2017-07-24 15:48 ` Jan Kara
2017-07-24 15:48 ` [Qemu-devel] " Jan Kara
2017-07-24 15:48 ` Jan Kara
2017-07-24 16:19 ` Dan Williams
2017-07-24 16:19 ` [Qemu-devel] " Dan Williams
2017-07-24 16:19 ` Dan Williams
2017-07-25 14:27 ` Pankaj Gupta
2017-07-25 14:27 ` [Qemu-devel] " Pankaj Gupta
2017-07-25 14:27 ` Pankaj Gupta
2017-07-25 14:46 ` Dan Williams
2017-07-25 14:46 ` [Qemu-devel] " Dan Williams
2017-07-25 14:46 ` Dan Williams
2017-07-25 20:59 ` Rik van Riel
2017-07-25 20:59 ` [Qemu-devel] " Rik van Riel
2017-07-26 13:47 ` Pankaj Gupta
2017-07-26 13:47 ` [Qemu-devel] " Pankaj Gupta
2017-07-26 13:47 ` Pankaj Gupta
2017-07-26 21:27 ` Rik van Riel [this message]
2017-07-26 21:27 ` [Qemu-devel] " Rik van Riel
2017-07-26 21:40 ` Dan Williams
2017-07-26 21:40 ` [Qemu-devel] " Dan Williams
2017-07-26 21:40 ` Dan Williams
2017-07-26 23:46 ` Rik van Riel
2017-07-26 23:46 ` [Qemu-devel] " Rik van Riel
2017-07-26 23:46 ` Rik van Riel
2017-07-27 0:54 ` Dan Williams
2017-07-27 0:54 ` [Qemu-devel] " Dan Williams
2017-07-27 0:54 ` Dan Williams
2017-10-31 7:13 ` Xiao Guangrong
2017-10-31 7:13 ` [Qemu-devel] " Xiao Guangrong
2017-10-31 7:13 ` Xiao Guangrong
2017-10-31 14:20 ` Dan Williams
2017-10-31 14:20 ` [Qemu-devel] " Dan Williams
2017-10-31 14:20 ` Dan Williams
2017-11-01 3:43 ` Xiao Guangrong
2017-11-01 3:43 ` [Qemu-devel] " Xiao Guangrong
2017-11-01 3:43 ` Xiao Guangrong
2017-11-01 4:25 ` Dan Williams
2017-11-01 4:25 ` [Qemu-devel] " Dan Williams
2017-11-01 4:25 ` Dan Williams
2017-11-01 6:46 ` Xiao Guangrong
2017-11-01 6:46 ` [Qemu-devel] " Xiao Guangrong
2017-11-01 6:46 ` Xiao Guangrong
2017-11-01 15:20 ` Dan Williams
2017-11-01 15:20 ` [Qemu-devel] " Dan Williams
2017-11-01 15:20 ` Dan Williams
2017-11-02 8:50 ` Xiao Guangrong
2017-11-02 8:50 ` [Qemu-devel] " Xiao Guangrong
2017-11-02 8:50 ` Xiao Guangrong
2017-11-02 16:30 ` Dan Williams
2017-11-02 16:30 ` [Qemu-devel] " Dan Williams
2017-11-02 16:30 ` Dan Williams
2017-11-03 6:21 ` Xiao Guangrong
2017-11-03 6:21 ` [Qemu-devel] " Xiao Guangrong
2017-11-03 6:21 ` Xiao Guangrong
2017-11-21 18:19 ` Rik van Riel
2017-11-21 18:19 ` [Qemu-devel] " Rik van Riel
2017-11-21 18:26 ` Dan Williams
2017-11-21 18:26 ` [Qemu-devel] " Dan Williams
2017-11-21 18:26 ` Dan Williams
2017-11-21 18:35 ` Rik van Riel
2017-11-21 18:35 ` [Qemu-devel] " Rik van Riel
2017-11-23 4:05 ` Xiao Guangrong
2017-11-23 4:05 ` [Qemu-devel] " Xiao Guangrong
2017-11-23 4:05 ` Xiao Guangrong
2017-11-23 16:14 ` Dan Williams
2017-11-23 16:14 ` [Qemu-devel] " Dan Williams
2017-11-23 16:14 ` Dan Williams
2017-11-23 16:28 ` Paolo Bonzini
2017-11-23 16:28 ` [Qemu-devel] " Paolo Bonzini
2017-11-23 16:28 ` Paolo Bonzini
2017-11-24 12:40 ` Pankaj Gupta
2017-11-24 12:40 ` [Qemu-devel] " Pankaj Gupta
2017-11-24 12:40 ` Pankaj Gupta
2017-11-24 12:44 ` Paolo Bonzini
2017-11-24 12:44 ` [Qemu-devel] " Paolo Bonzini
2017-11-24 12:44 ` Paolo Bonzini
2017-11-24 13:02 ` [Qemu-devel] " Pankaj Gupta
2017-11-24 13:02 ` Pankaj Gupta
2017-11-24 13:20 ` Paolo Bonzini
2017-11-24 13:20 ` Paolo Bonzini
2017-11-28 18:03 ` Dan Williams
2017-11-28 18:03 ` [Qemu-devel] " Dan Williams
2017-11-28 18:03 ` Dan Williams
2018-01-13 6:23 ` Pankaj Gupta
2018-01-13 6:23 ` [Qemu-devel] " Pankaj Gupta
2018-01-13 6:23 ` Pankaj Gupta
2018-01-17 16:17 ` Dan Williams
2018-01-17 16:17 ` [Qemu-devel] " Dan Williams
2018-01-17 16:17 ` Dan Williams
2018-01-17 17:31 ` Pankaj Gupta
2018-01-17 17:31 ` [Qemu-devel] " Pankaj Gupta
2018-01-17 17:31 ` Pankaj Gupta
2018-01-18 16:53 ` David Hildenbrand
2018-01-18 16:53 ` [Qemu-devel] " David Hildenbrand
2018-01-18 16:53 ` David Hildenbrand
2018-01-18 17:38 ` Dan Williams
2018-01-18 17:38 ` [Qemu-devel] " Dan Williams
2018-01-18 17:38 ` Dan Williams
2018-01-18 17:48 ` David Hildenbrand
2018-01-18 17:48 ` [Qemu-devel] " David Hildenbrand
2018-01-18 17:48 ` David Hildenbrand
2018-01-18 18:45 ` Dan Williams
2018-01-18 18:45 ` [Qemu-devel] " Dan Williams
2018-01-18 18:45 ` Dan Williams
2018-01-18 18:54 ` Pankaj Gupta
2018-01-18 18:54 ` [Qemu-devel] " Pankaj Gupta
2018-01-18 18:54 ` Pankaj Gupta
2018-01-18 18:59 ` Dan Williams
2018-01-18 18:59 ` [Qemu-devel] " Dan Williams
2018-01-18 18:59 ` Dan Williams
2018-01-18 19:36 ` Pankaj Gupta
2018-01-18 19:36 ` [Qemu-devel] " Pankaj Gupta
2018-01-18 19:36 ` Pankaj Gupta
2018-01-18 19:48 ` Dan Williams
2018-01-18 19:48 ` [Qemu-devel] " Dan Williams
2018-01-18 19:48 ` Dan Williams
2018-01-18 19:51 ` David Hildenbrand
2018-01-18 19:51 ` [Qemu-devel] " David Hildenbrand
2018-01-18 19:51 ` David Hildenbrand
2018-01-18 20:11 ` Dan Williams
2018-01-18 20:11 ` [Qemu-devel] " Dan Williams
2018-01-18 20:11 ` Dan Williams
2017-11-06 7:57 ` [Qemu-devel] " Pankaj Gupta
2017-11-06 7:57 ` Pankaj Gupta
2017-11-06 16:57 ` Dan Williams
2017-11-06 16:57 ` Dan Williams
2017-11-07 11:21 ` Pankaj Gupta
2017-11-07 11:21 ` Pankaj Gupta
2017-11-07 11:21 ` Pankaj Gupta
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