linux-kernel - Re: [RFC 1/8] Introduce Peer-to-Peer memory (p2pmem) device

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Date:   Fri, 31 Mar 2017 22:17:07 -0400
From:   okaya@...eaurora.org
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jens Axboe <axboe@...nel.dk>,
        Steve Wise <swise@...ngridcomputing.com>,
        Stephen Bates <sbates@...thlin.com>,
        Max Gurtovoy <maxg@...lanox.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Keith Busch <keith.busch@...el.com>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        linux-pci@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-rdma@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 1/8] Introduce Peer-to-Peer memory (p2pmem) device

On 2017-03-31 21:57, Logan Gunthorpe wrote:
> On 31/03/17 05:51 PM, Sinan Kaya wrote:
>> You can put a restriction with DMI/SMBIOS such that all devices from 
>> 2016
>> work else they belong to blacklist.
> 
> How do you get a manufacturing date for a given device within the
> kernel? Is this actually something generically available?
> 
> Logan

Smbios calls are used all over the place in kernel for introducing new 
functionality while maintaining backwards compatibility.

See drivers/pci and drivers/acpi directory.