On Mon, Sep 11, 2017 at 2:24 PM, Konrad Rzeszutek Wilk
wrote:
> On Mon, Sep 11, 2017 at 09:35:08AM -0700, Dan Williams wrote:
>> On Sun, Sep 10, 2017 at 10:39 PM, Haozhong Zhang
>> wrote:
>> > On 09/10/17 22:10 -0700, Dan Williams wrote:
>> >> On Sun, Sep
On Sun, Sep 10, 2017 at 10:39 PM, Haozhong Zhang
wrote:
> On 09/10/17 22:10 -0700, Dan Williams wrote:
>> On Sun, Sep 10, 2017 at 9:37 PM, Haozhong Zhang
>> wrote:
>> > The kernel NVDIMM driver and the traditional NVDIMM management
>> > utilities in Dom0 does n
On Sun, Sep 10, 2017 at 9:37 PM, Haozhong Zhang
wrote:
> The kernel NVDIMM driver and the traditional NVDIMM management
> utilities in Dom0 does not work now. 'xen-ndctl' is added as an
> alternatively, which manages NVDIMM via Xen hypercalls.
>
> Signed-off-by: Haozhong Zhang
> ---
> Cc: Ian Jac
On Thu, Aug 24, 2017 at 9:39 AM, Christoph Hellwig wrote:
> On Thu, Aug 24, 2017 at 09:31:17AM -0700, Dan Williams wrote:
>> External agent is a DMA device, or a hypervisor like Xen. In the DMA
>> case perhaps we can use the fcntl lease mechanism, I'll investigate.
>> I
[ adding Xen ]
On Thu, Aug 24, 2017 at 9:11 AM, Christoph Hellwig wrote:
> I still can't make any sense of this description. What is an external
> agent? Userspace obviously can't ever see a change in the extent
> map, so it can't be meant.
External agent is a DMA device, or a hypervisor like
>> I don't think KVM has the same issue, but honestly I don't have the
>> full mental model of how KVM supports mmap. I've at least been able to
>> run a guest where the "pmem" is just dynamic page cache on the host
>> side so the physical memory mapping is changing all the time due to
>> swap. KVM
On Tue, Apr 4, 2017 at 10:34 AM, Konrad Rzeszutek Wilk
wrote:
> On Tue, Apr 04, 2017 at 10:16:41AM -0700, Dan Williams wrote:
>> On Tue, Apr 4, 2017 at 10:00 AM, Konrad Rzeszutek Wilk
>> wrote:
>> > On Sat, Apr 01, 2017 at 08:45:45AM -0700, Dan Williams wrote:
>>
On Tue, Apr 4, 2017 at 10:00 AM, Konrad Rzeszutek Wilk
wrote:
> On Sat, Apr 01, 2017 at 08:45:45AM -0700, Dan Williams wrote:
>> On Sat, Apr 1, 2017 at 4:54 AM, Konrad Rzeszutek Wilk
>> wrote:
>> > ..snip..
>> >> >> Is there a resource I can r
On Sat, Apr 1, 2017 at 4:54 AM, Konrad Rzeszutek Wilk wrote:
> ..snip..
>> >> Is there a resource I can read more about why the hypervisor needs to
>> >> have this M2P mapping for nvdimm support?
>> >
>> > M2P is basically an array of frame numbers. It's indexed by the host
>> > page frame number,
On Thu, Mar 30, 2017 at 1:21 AM, Haozhong Zhang
wrote:
> On 03/29/17 21:20 -0700, Dan Williams wrote:
>> On Sun, Mar 19, 2017 at 5:09 PM, Haozhong Zhang
>> wrote:
>> > This is v2 RFC patch series to add vNVDIMM support to HVM domains.
>> > v1 can be found at
On Sun, Mar 19, 2017 at 5:09 PM, Haozhong Zhang
wrote:
> This is v2 RFC patch series to add vNVDIMM support to HVM domains.
> v1 can be found at
> https://lists.xenproject.org/archives/html/xen-devel/2016-10/msg00424.html.
>
> No label and no _DSM except function 0 "query implemented functions"
>
On Sun, Mar 19, 2017 at 5:09 PM, Haozhong Zhang
wrote:
> xen-ndctl is a tool for users in Dom0 to setup the host pmem with Xen
> hypervisor. It's used to specify the storage, which is either the
> regular RAM or a pmem range, to manage the specified pmem.
>
> Signed-off-by: Haozhong Zhang
> ---
>
On Thu, Oct 13, 2016 at 9:01 AM, Andrew Cooper
wrote:
> On 13/10/16 16:40, Dan Williams wrote:
>> On Thu, Oct 13, 2016 at 2:08 AM, Jan Beulich wrote:
>> [..]
>>>> I think we can do the similar for Xen, like to lay another pseudo
>>>> device on /dev/pme
On Thu, Oct 13, 2016 at 2:08 AM, Jan Beulich wrote:
[..]
>> I think we can do the similar for Xen, like to lay another pseudo
>> device on /dev/pmem and do the reservation, like 2. in my previous
>> reply.
>
> Well, my opinion certainly doesn't count much here, but I continue to
> consider this a
On Wed, Oct 12, 2016 at 9:01 AM, Jan Beulich wrote:
On 12.10.16 at 17:42, wrote:
>> On Wed, Oct 12, 2016 at 8:39 AM, Jan Beulich wrote:
>> On 12.10.16 at 16:58, wrote:
On 10/12/16 05:32 -0600, Jan Beulich wrote:
On 12.10.16 at 12:33, wrote:
>> The layout is shown as
On Wed, Oct 12, 2016 at 8:39 AM, Jan Beulich wrote:
On 12.10.16 at 16:58, wrote:
>> On 10/12/16 05:32 -0600, Jan Beulich wrote:
>> On 12.10.16 at 12:33, wrote:
The layout is shown as the following diagram.
+---+---+---+--+--+
>>
On Tue, Oct 11, 2016 at 12:48 PM, Konrad Rzeszutek Wilk
wrote:
> On Tue, Oct 11, 2016 at 12:28:56PM -0700, Dan Williams wrote:
>> On Tue, Oct 11, 2016 at 11:33 AM, Konrad Rzeszutek Wilk
>> wrote:
>> > On Tue, Oct 11, 2016 at 10:51:19AM -0700, Dan Williams wrote:
>>
On Tue, Oct 11, 2016 at 11:33 AM, Konrad Rzeszutek Wilk
wrote:
> On Tue, Oct 11, 2016 at 10:51:19AM -0700, Dan Williams wrote:
[..]
>> Right, but why does the libnvdimm core need to know about this
>> specific Xen reservation? For example, if Xen wants some in-kernel
>
> Le
On Tue, Oct 11, 2016 at 9:58 AM, Konrad Rzeszutek Wilk
wrote:
> On Tue, Oct 11, 2016 at 08:53:33AM -0700, Dan Williams wrote:
>> On Tue, Oct 11, 2016 at 6:08 AM, Jan Beulich wrote:
>> >>>> Andrew Cooper 10/10/16 6:44 PM >>>
>> >>On 10/10/16 01
On Tue, Oct 11, 2016 at 6:08 AM, Jan Beulich wrote:
Andrew Cooper 10/10/16 6:44 PM >>>
>>On 10/10/16 01:35, Haozhong Zhang wrote:
>>> Xen hypervisor needs assistance from Dom0 Linux kernel for following tasks:
>>> 1) Reserve an area on NVDIMM devices for Xen hypervisor to place
>>>memory
On Sun, Oct 9, 2016 at 11:32 PM, Haozhong Zhang
wrote:
> On 10/09/16 20:45, Dan Williams wrote:
>> On Sun, Oct 9, 2016 at 5:35 PM, Haozhong Zhang
>> wrote:
>> > Overview
>> >
>> > This RFC kernel patch series along with corresponding patch ser
On Sun, Oct 9, 2016 at 5:35 PM, Haozhong Zhang wrote:
> Overview
>
> This RFC kernel patch series along with corresponding patch series of
> Xen, QEMU and ndctl implements Xen vNVDIMM, which can map the host
> NVDIMM devices to Xen HVM domU as vNVDIMM devices.
>
> Xen hypervisor does not
kernel/git/djbw/nvdimm.git pmem-api
>
> commit 163f9409a57082aed03fbeeb321fbf18bdaf5f42
> Author: Dan Williams
> AuthorDate: Wed Jul 22 18:09:01 2015 -0400
> Commit: Dan Williams
> CommitDate: Wed Jul 22 18:09:01 2015 -0400
>
> arch: introduce memremap(), replace io
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