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Re: [Qemu-devel] [PATCH 00/16] implement vNVDIMM
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 00/16] implement vNVDIMM |
Date: |
Thu, 2 Jul 2015 10:20:44 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Wed, Jul 01, 2015 at 10:50:16PM +0800, Xiao Guangrong wrote:
> ====== Background ======
> NVDIMM (A Non-Volatile Dual In-line Memory Module) is going to be supported
> on Intel's platform. They are discovered via ACPI and configured by _DSM
> method of NVDIMM device in ACPI. There has some supporting documents which
> can be found at:
> ACPI 6: http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf
> NVDIMM Namespace: http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf
> DSM Interface Example:
> http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
> Driver Writer's Guide:
> http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf
>
> Currently, the NVDIMM driver has been merged into upstream Linux Kernel and
> this patchset tries to enable it in virtualization field
From a device model perspective, have you checked whether it makes sense
to integrate nvdimms into the pc-dimm and hostmem code that is used for
memory hotplug and NUMA?
The NVDIMM device in your patches is a completely new TYPE_DEVICE so it
doesn't share any interfaces or code with existing memory devices.
Maybe that is the right solution here because NVDIMMs have different
characteristics, but I'm not sure.
pgpBuuUPF_S8X.pgp
Description: PGP signature
- [Qemu-devel] [PATCH 12/16] nvdimm: save arg3 for NVDIMM device _DSM method, (continued)
- [Qemu-devel] [PATCH 12/16] nvdimm: save arg3 for NVDIMM device _DSM method, Xiao Guangrong, 2015/07/01
- [Qemu-devel] [PATCH 15/16] nvdimm: support NFIT_CMD_GET_CONFIG_DATA, Xiao Guangrong, 2015/07/01
- [Qemu-devel] [PATCH 14/16] nvdimm: support NFIT_CMD_GET_CONFIG_SIZE function, Xiao Guangrong, 2015/07/01
- [Qemu-devel] [PATCH 16/16] nvdimm: support NFIT_CMD_SET_CONFIG_DATA, Xiao Guangrong, 2015/07/01
- Re: [Qemu-devel] [PATCH 00/16] implement vNVDIMM, Michael S. Tsirkin, 2015/07/02
- Re: [Qemu-devel] [PATCH 00/16] implement vNVDIMM,
Stefan Hajnoczi <=