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Re: [Xen-devel] [PATCH 4/4] hvmloader: add support to load extra ACPI tables from qemu
- To: Jan Beulich <JBeulich@xxxxxxxx>
- From: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
- Date: Tue, 26 Jan 2016 23:57:48 +0800
- Cc: Juergen Gross <JGross@xxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Ian Campbell <ian.campbell@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>, Keir Fraser <keir@xxxxxxx>
- Delivery-date: Tue, 26 Jan 2016 15:57:57 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
- Mail-followup-to: Jan Beulich <JBeulich@xxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Ian Campbell <ian.campbell@xxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>, Juergen Gross <JGross@xxxxxxxx>, Keir Fraser <keir@xxxxxxx>
On 01/26/16 08:37, Jan Beulich wrote:
> >>> On 26.01.16 at 15:44, <konrad.wilk@xxxxxxxxxx> wrote:
> >> Last year at Linux Plumbers Conference I attended a session dedicated
> >> to NVDIMM support. I asked the very same question and the INTEL guy
> >> there told me there is indeed something like a partition table meant
> >> to describe the layout of the memory areas and their contents.
> >
> > It is described in details at pmem.io, look at Documents, see
> > http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf see Namespaces section.
>
> Well, that's about how PMEM and PBLK ranges get marked, but not
> about how use of the space inside a PMEM range is coordinated.
>
How a NVDIMM is partitioned into pmem and pblk is described by ACPI NFIT table.
Namespace to pmem is something like partition table to disk.
Haozhong
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