From: Paolo Bonzini <pbonzini@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>,
Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com,
gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org,
"Marc-André Lureau" <marcandre.lureau@gmail.com>,
stefanha@redhat.com, imammedo@redhat.com, rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH 00/16] implement vNVDIMM
Date: Thu, 2 Jul 2015 11:52:58 +0200 [thread overview]
Message-ID: <559509FA.20509@redhat.com> (raw)
In-Reply-To: <20150702092044.GB20198@stefanha-thinkpad.redhat.com>
On 02/07/2015 11:20, Stefan Hajnoczi wrote:
> > 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.
The hostmem code should definitely be shared, e.g. by adding a new
"file" property to the memory-backend-file class. ivshmem can also use
it---CCing Marc-André.
I don't know about the pc-dimm devices. If the NVDIMM devices can do
_OST and can be hotplugged, then the answer is probably yes.
Paolo
next prev parent reply other threads:[~2015-07-02 9:53 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-01 14:50 [Qemu-devel] [PATCH 00/16] implement vNVDIMM Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 01/16] acpi: allow aml_operation_region() working on 64 bit offset Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 02/16] i386/acpi-build: allow SSDT to operate on 64 bit Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 03/16] acpi: add aml_derefof Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 04/16] acpi: add aml_sizeof Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 05/16] acpi: add aml_create_field Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 06/16] pc: implement NVDIMM device abstract Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 07/16] nvdimm: reserve address range for NVDIMM Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 08/16] nvdimm: init backend memory mapping and config data area Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 09/16] nvdimm: build ACPI NFIT table Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 10/16] nvdimm: init the address region used by _DSM method Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 11/16] nvdimm: build ACPI nvdimm devices Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 12/16] nvdimm: save arg3 for NVDIMM device _DSM method Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 13/16] nvdimm: support NFIT_CMD_IMPLEMENTED function Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 14/16] nvdimm: support NFIT_CMD_GET_CONFIG_SIZE function Xiao Guangrong
2015-07-02 9:23 ` Stefan Hajnoczi
2015-07-02 18:02 ` Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 15/16] nvdimm: support NFIT_CMD_GET_CONFIG_DATA Xiao Guangrong
2015-07-01 14:50 ` [Qemu-devel] [PATCH 16/16] nvdimm: support NFIT_CMD_SET_CONFIG_DATA Xiao Guangrong
2015-07-02 6:17 ` [Qemu-devel] [PATCH 00/16] implement vNVDIMM Michael S. Tsirkin
2015-07-02 6:34 ` Xiao Guangrong
2015-07-02 8:31 ` Stefan Hajnoczi
2015-07-02 8:35 ` Michael S. Tsirkin
2015-07-02 9:20 ` Stefan Hajnoczi
2015-07-02 9:52 ` Paolo Bonzini [this message]
2015-07-02 18:01 ` Xiao Guangrong
2015-07-02 18:11 ` Paolo Bonzini
2015-07-29 8:41 ` Xiao Guangrong
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