From: "Steve Wise" <swise@opengridcomputing.com>
To: 'Sagi Grimberg' <sagi@grimberg.me>,
'Logan Gunthorpe' <logang@deltatee.com>,
'Christoph Hellwig' <hch@lst.de>,
"'James E.J. Bottomley'" <jejb@linux.vnet.ibm.com>,
"'Martin K. Petersen'" <martin.petersen@oracle.com>,
'Jens Axboe' <axboe@kernel.dk>,
'Stephen Bates' <sbates@raithlin.com>,
'Max Gurtovoy' <maxg@mellanox.com>,
'Dan Williams' <dan.j.williams@intel.com>,
'Keith Busch' <keith.busch@intel.com>,
'Jason Gunthorpe' <jgunthorpe@obsidianresearch.com>
Cc: linux-scsi@vger.kernel.org, linux-nvdimm@lists.01.org,
linux-rdma@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: RE: [RFC 2/8] cxgb4: setup pcie memory window 4 and create p2pmem region
Date: Wed, 5 Apr 2017 10:41:45 -0500 [thread overview]
Message-ID: <003001d2ae23$21e8f7d0$65bae770$@opengridcomputing.com> (raw)
In-Reply-To: <f269d9e1-8dcf-7970-382e-cb0d9a020efc@grimberg.me>
>
>
> > +static void setup_memwin_p2pmem(struct adapter *adap)
> > +{
> > + unsigned int mem_base = t4_read_reg(adap,
> CIM_EXTMEM2_BASE_ADDR_A);
> > + unsigned int mem_size = t4_read_reg(adap,
> CIM_EXTMEM2_ADDR_SIZE_A);
> > +
> > + if (!use_p2pmem)
> > + return;
>
> This is weird, why even call this if !use_p2pmem?
>
The use_p2pmem was added after the original change. I'll update as you
suggest.
> > +static int init_p2pmem(struct adapter *adapter)
> > +{
> > + unsigned int mem_size = t4_read_reg(adapter,
> CIM_EXTMEM2_ADDR_SIZE_A);
> > + struct p2pmem_dev *p;
> > + int rc;
> > + struct resource res;
> > +
> > + if (!mem_size || !use_p2pmem)
> > + return 0;
>
> Again, weird...
Yup.
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next prev parent reply other threads:[~2017-04-05 15:41 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-30 22:12 [RFC 0/8] Copy Offload with Peer-to-Peer PCI Memory Logan Gunthorpe
2017-03-30 22:12 ` [RFC 1/8] Introduce Peer-to-Peer memory (p2pmem) device Logan Gunthorpe
2017-03-31 18:49 ` Sinan Kaya
2017-03-31 21:23 ` Logan Gunthorpe
2017-03-31 21:38 ` Sinan Kaya
2017-03-31 22:42 ` Logan Gunthorpe
2017-03-31 23:51 ` Sinan Kaya
2017-04-01 1:57 ` Logan Gunthorpe
2017-04-01 2:17 ` okaya
2017-04-01 22:16 ` Logan Gunthorpe
2017-04-02 2:26 ` Sinan Kaya
2017-04-02 17:21 ` Logan Gunthorpe
2017-04-02 21:03 ` Sinan Kaya
2017-04-03 4:26 ` Logan Gunthorpe
2017-04-25 11:58 ` Marta Rybczynska
2017-04-25 16:58 ` Logan Gunthorpe
2017-03-30 22:12 ` [RFC 2/8] cxgb4: setup pcie memory window 4 and create p2pmem region Logan Gunthorpe
2017-04-04 10:42 ` Sagi Grimberg
2017-04-04 15:56 ` Logan Gunthorpe
2017-04-05 15:41 ` Steve Wise [this message]
2017-03-30 22:12 ` [RFC 3/8] nvmet: Use p2pmem in nvme target Logan Gunthorpe
2017-04-04 10:40 ` Sagi Grimberg
2017-04-04 16:16 ` Logan Gunthorpe
2017-04-06 5:47 ` Sagi Grimberg
2017-04-06 15:52 ` Logan Gunthorpe
2017-03-30 22:12 ` [RFC 4/8] p2pmem: Add debugfs "stats" file Logan Gunthorpe
2017-04-04 10:46 ` Sagi Grimberg
2017-04-04 17:25 ` Logan Gunthorpe
2017-04-05 15:43 ` Steve Wise
2017-03-30 22:12 ` [RFC 5/8] scatterlist: Modify SG copy functions to support io memory Logan Gunthorpe
2017-03-31 7:09 ` Christoph Hellwig
2017-03-31 15:41 ` Logan Gunthorpe
2017-04-03 21:20 ` Logan Gunthorpe
2017-04-03 21:44 ` Dan Williams
2017-04-03 22:10 ` Logan Gunthorpe
2017-04-03 22:47 ` Dan Williams
2017-04-03 23:12 ` Logan Gunthorpe
2017-04-04 0:07 ` Dan Williams
2017-04-07 17:59 ` Logan Gunthorpe
2017-03-30 22:12 ` [RFC 6/8] nvmet: Be careful about using iomem accesses when dealing with p2pmem Logan Gunthorpe
2017-04-04 10:59 ` Sagi Grimberg
[not found] ` <080b68b4-eba3-861c-4f29-5d829425b5e7-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
2017-04-04 15:46 ` Jason Gunthorpe
[not found] ` <20170404154629.GA13552-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-04-04 17:21 ` Logan Gunthorpe
2017-04-06 5:33 ` Sagi Grimberg
2017-04-06 16:35 ` Jason Gunthorpe
[not found] ` <4df229d8-8124-664a-9bc4-6401bc034be1-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
2017-04-06 16:02 ` Logan Gunthorpe
2017-04-07 11:19 ` Stephen Bates
[not found] ` <3E85B4D4-9EBC-4299-8209-2D8740947764-pv7U853sEMVWk0Htik3J/w@public.gmane.org>
2017-04-10 8:29 ` Sagi Grimberg
[not found] ` <7fcc3ac8-8b96-90f5-3942-87f999c7499d-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
2017-04-10 16:03 ` Logan Gunthorpe
2017-03-30 22:12 ` [RFC 7/8] p2pmem: Support device removal Logan Gunthorpe
2017-03-30 22:12 ` [RFC 8/8] p2pmem: Added char device user interface Logan Gunthorpe
[not found] ` <1490911959-5146-1-git-send-email-logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-12 5:22 ` [RFC 0/8] Copy Offload with Peer-to-Peer PCI Memory Benjamin Herrenschmidt
[not found] ` <1491974532.7236.43.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-12 17:09 ` Logan Gunthorpe
[not found] ` <5ac22496-56ec-025d-f153-140001d2a7f9-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-12 21:55 ` Benjamin Herrenschmidt
[not found] ` <1492034124.7236.77.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-13 21:22 ` Logan Gunthorpe
[not found] ` <81888a1e-eb0d-cbbc-dc66-0a09c32e4ea2-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-13 22:37 ` Benjamin Herrenschmidt
2017-04-13 23:26 ` Bjorn Helgaas
[not found] ` <20170413232631.GB24910-1RhO1Y9PlrlHTL0Zs8A6p5iNqAH0jzoTYJqu5kTmcBRl57MIdRCFDg@public.gmane.org>
2017-04-14 4:16 ` Jason Gunthorpe
[not found] ` <20170414041656.GA30694-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-04-14 4:40 ` Logan Gunthorpe
[not found] ` <08c32f0d-6c7c-b65f-6453-dde0d7c173d1-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-14 11:37 ` Benjamin Herrenschmidt
[not found] ` <1492169879.25766.4.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-14 11:39 ` Benjamin Herrenschmidt
2017-04-14 11:37 ` Benjamin Herrenschmidt
[not found] ` <1492169849.25766.3.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-14 17:30 ` Logan Gunthorpe
[not found] ` <630c1c63-ff17-1116-e069-2b8f93e50fa2-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-14 19:04 ` Bjorn Helgaas
[not found] ` <20170414190452.GA15679-1RhO1Y9PlrlHTL0Zs8A6p5iNqAH0jzoTYJqu5kTmcBRl57MIdRCFDg@public.gmane.org>
2017-04-14 22:07 ` Benjamin Herrenschmidt
[not found] ` <1492207643.25766.18.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-15 17:41 ` Logan Gunthorpe
2017-04-15 22:09 ` Dan Williams
[not found] ` <CAPcyv4jUeKzKDARp6Z35kdPLKnP-M6aF8X5KpOx55CLyjnj4dA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-16 3:01 ` Benjamin Herrenschmidt
[not found] ` <1492311719.25766.37.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-16 4:46 ` Logan Gunthorpe
2017-04-16 15:53 ` Dan Williams
[not found] ` <CAPcyv4iqnz1B00Q3xG-nGrLXdOyB7ditxmwZyotksLFgUqr+jA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-16 16:34 ` Logan Gunthorpe
[not found] ` <5e43818e-8c6b-8be8-23ff-b798633d2a73-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-16 22:31 ` Benjamin Herrenschmidt
[not found] ` <1492381907.25766.49.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-24 7:36 ` Knut Omang
[not found] ` <1493019397.3171.118.camel-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2017-04-24 16:14 ` Logan Gunthorpe
[not found] ` <9b6c0830-a728-c7ca-e6c6-2135f3f760ed-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-25 6:30 ` Knut Omang
[not found] ` <1493101803.3171.246.camel-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2017-04-25 17:03 ` Logan Gunthorpe
[not found] ` <0cc95df5-b9dd-6493-15fe-771d535c1020-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-25 21:23 ` Stephen Bates
2017-04-25 21:23 ` Stephen Bates
2017-04-16 22:26 ` Benjamin Herrenschmidt
[not found] ` <bff1e503-95a9-e19f-bfd9-0ff962c63a81-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2017-04-15 22:17 ` Benjamin Herrenschmidt
[not found] ` <1492294628.25766.33.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2017-04-16 5:36 ` Logan Gunthorpe
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