From: Xiao Guangrong <guangrong.xiao@linux.intel.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: ehabkost@redhat.com, KVM list <kvm@vger.kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Gleb Natapov <gleb@kernel.org>,
mtosatti@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com,
imammedo@redhat.com, Paolo Bonzini <pbonzini@redhat.com>,
rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH v3 00/32] implement vNVDIMM
Date: Tue, 13 Oct 2015 13:49:01 +0800 [thread overview]
Message-ID: <561C9B4D.2070703@linux.intel.com> (raw)
In-Reply-To: <CAA9_cmd7K_LroUT88cPYF5rW1BbwFdW1xEfn2xWVBfTVvMKD7A@mail.gmail.com>
On 10/13/2015 11:38 AM, Dan Williams wrote:
> On Mon, Oct 12, 2015 at 8:14 PM, Xiao Guangrong
> <guangrong.xiao@linux.intel.com> wrote:
>> On 10/13/2015 12:36 AM, Dan Williams wrote:
>>> Static namespaces can be emitted without a label. Linux needs this to
>>> support existing "label-less" bare metal NVDIMMs.
>>
>>
>> This is Linux specific? As i did not see it has been documented in the
>> spec...
>
> I expect most NVDIMMs, especially existing ones available today, do
> not have a label area. This is not Linux specific and ACPI 6 does not
> specify a label area, only the Intel DSM Interface Example.
>
Yup, label data is accessed via DSM interface, the spec I mentioned
is Intel DSM Interface Example.
However, IIRC Linux NVDIMM driver refused to use the device if no
DSM GET_LABEL support, are you going to update it?
next prev parent reply other threads:[~2015-10-13 5:55 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-11 3:52 [Qemu-devel] [PATCH v3 00/32] implement vNVDIMM Xiao Guangrong
2015-10-10 21:17 ` Dan Williams
2015-10-12 4:33 ` Xiao Guangrong
2015-10-12 16:36 ` Dan Williams
2015-10-13 3:14 ` Xiao Guangrong
2015-10-13 3:38 ` Dan Williams
2015-10-13 5:49 ` Xiao Guangrong [this message]
2015-10-13 6:36 ` Dan Williams
2015-10-14 4:03 ` Xiao Guangrong
2015-10-14 19:20 ` Dan Williams
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 01/32] acpi: add aml_derefof Xiao Guangrong
2015-10-13 12:30 ` Igor Mammedov
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 02/32] acpi: add aml_sizeof Xiao Guangrong
2015-10-13 12:33 ` Igor Mammedov
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 03/32] acpi: add aml_create_field Xiao Guangrong
2015-10-13 12:38 ` Igor Mammedov
2015-10-13 16:36 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 04/32] acpi: add aml_mutex, aml_acquire, aml_release Xiao Guangrong
2015-10-13 13:34 ` Igor Mammedov
2015-10-13 16:44 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 05/32] acpi: add aml_concatenate Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 06/32] acpi: add aml_object_type Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 07/32] util: introduce qemu_file_get_page_size() Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 08/32] exec: allow memory to be allocated from any kind of path Xiao Guangrong
2015-10-12 10:08 ` Michael S. Tsirkin
2015-10-13 3:31 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 09/32] exec: allow file_ram_alloc to work on file Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 10/32] hostmem-file: clean up memory allocation Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 11/32] hostmem-file: use whole file size if possible Xiao Guangrong
2015-10-13 11:50 ` Vladimir Sementsov-Ogievskiy
2015-10-13 16:53 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 12/32] pc-dimm: remove DEFAULT_PC_DIMMSIZE Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 13/32] pc-dimm: make pc_existing_dimms_capacity static and rename it Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 14/32] pc-dimm: drop the prefix of pc-dimm Xiao Guangrong
2015-10-12 16:43 ` Eric Blake
2015-10-13 3:32 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 15/32] stubs: rename qmp_pc_dimm_device_list.c Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 16/32] pc-dimm: rename pc-dimm.c and pc-dimm.h Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 17/32] dimm: abstract dimm device from pc-dimm Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 18/32] dimm: get mapped memory region from DIMMDeviceClass->get_memory_region Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 19/32] dimm: keep the state of the whole backend memory Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 20/32] dimm: introduce realize callback Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 21/32] nvdimm: implement NVDIMM device abstract Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 22/32] nvdimm: init the address region used by NVDIMM ACPI Xiao Guangrong
2015-10-19 6:56 ` Michael S. Tsirkin
2015-10-19 7:27 ` Xiao Guangrong
2015-10-19 7:39 ` Michael S. Tsirkin
2015-10-19 7:44 ` Xiao Guangrong
2015-10-19 9:17 ` Michael S. Tsirkin
2015-10-19 9:46 ` Igor Mammedov
2015-10-19 10:01 ` Xiao Guangrong
2015-10-19 10:34 ` Michael S. Tsirkin
2015-10-19 10:42 ` Igor Mammedov
2015-10-19 17:56 ` Xiao Guangrong
2015-10-20 2:27 ` Xiao Guangrong
2015-10-19 9:18 ` Igor Mammedov
2015-10-19 10:25 ` Michael S. Tsirkin
2015-10-19 17:54 ` Xiao Guangrong
2015-10-19 21:20 ` Michael S. Tsirkin
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 23/32] nvdimm: build ACPI NFIT table Xiao Guangrong
2015-10-12 11:27 ` Michael S. Tsirkin
2015-10-13 5:13 ` Xiao Guangrong
2015-10-13 5:42 ` Michael S. Tsirkin
2015-10-13 6:06 ` Xiao Guangrong
2015-10-12 16:40 ` Dan Williams
2015-10-13 5:17 ` Xiao Guangrong
2015-10-13 6:07 ` Michael S. Tsirkin
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 24/32] nvdimm: init the address region used by DSM method Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 25/32] nvdimm: build ACPI nvdimm devices Xiao Guangrong
2015-10-13 14:39 ` Igor Mammedov
2015-10-13 17:24 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 26/32] nvdimm: save arg3 for NVDIMM device _DSM method Xiao Guangrong
2015-10-19 6:50 ` Michael S. Tsirkin
2015-10-19 7:14 ` Xiao Guangrong
2015-10-19 7:47 ` Michael S. Tsirkin
2015-10-19 7:51 ` Xiao Guangrong
2015-10-11 3:52 ` [Qemu-devel] [PATCH v3 27/32] nvdimm: support DSM_CMD_IMPLEMENTED function Xiao Guangrong
2015-10-14 9:40 ` Stefan Hajnoczi
2015-10-14 14:50 ` Xiao Guangrong
2015-10-14 17:06 ` Eduardo Habkost
2015-10-15 1:43 ` Xiao Guangrong
2015-10-15 15:07 ` Stefan Hajnoczi
2015-10-16 2:30 ` Xiao Guangrong
2015-10-14 9:41 ` Stefan Hajnoczi
2015-10-14 14:52 ` Xiao Guangrong
2015-10-15 15:01 ` Stefan Hajnoczi
2015-10-16 2:32 ` Xiao Guangrong
2015-10-11 3:53 ` [Qemu-devel] [PATCH v3 28/32] nvdimm: support DSM_CMD_NAMESPACE_LABEL_SIZE function Xiao Guangrong
2015-10-11 3:53 ` [Qemu-devel] [PATCH v3 29/32] nvdimm: support DSM_CMD_GET_NAMESPACE_LABEL_DATA Xiao Guangrong
2015-10-11 3:53 ` [Qemu-devel] [PATCH v3 30/32] nvdimm: support DSM_CMD_SET_NAMESPACE_LABEL_DATA Xiao Guangrong
2015-10-11 3:53 ` [Qemu-devel] [PATCH v3 31/32] nvdimm: allow using whole backend memory as pmem Xiao Guangrong
2015-10-11 3:53 ` [Qemu-devel] [PATCH v3 32/32] nvdimm: add maintain info Xiao Guangrong
2015-10-12 2:59 ` [Qemu-devel] [PATCH v3 00/32] implement vNVDIMM Bharata B Rao
2015-10-12 3:06 ` Xiao Guangrong
2015-10-12 8:20 ` Igor Mammedov
2015-10-12 8:21 ` Xiao Guangrong
2015-10-12 11:55 ` Michael S. Tsirkin
2015-10-13 5:29 ` Xiao Guangrong
2015-10-13 5:57 ` Michael S. Tsirkin
2015-10-13 5:52 ` Xiao Guangrong
2015-10-19 6:57 ` Michael S. Tsirkin
2015-10-19 6:56 ` Michael S. Tsirkin
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