From: Christoph Hellwig <hch@lst.de>
To: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>,
linux-nvdimm@ml01.01.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, x86@kernel.org,
ross.zwisler@linux.intel.com, axboe@kernel.dk
Subject: Re: another pmem variant V2
Date: Thu, 26 Mar 2015 19:38:06 +0100 [thread overview]
Message-ID: <20150326183806.GA27181@lst.de> (raw)
In-Reply-To: <55144257.8050004@plexistor.com>
On Thu, Mar 26, 2015 at 07:31:03PM +0200, Boaz Harrosh wrote:
> But I hope you are not ignoring my real problem. any two memmap= ranges
> will halt the boot. Specially if they are dis-contiguous.
not the case here, verified it in various cofigurations.
> Also I need the contiguous variant split into two devices because
> they might belong to two NUMA nodes. It is very hard to manage
> if a NUMA crossing is in a middle of a single pmemX device
> The way we like to configure it is that each /dev/pmem belongs to
> a single NUMA node. And in a multy device setup each CPU node
> allocates from "his" pmem device If there is space.
> (And it lets me set application affinity if need to)
The hack below ensures two separate type 12 entries stay separate,
but I'm not sure I really want this. so far it seems like very special
hacks for your very specialized fake-pmem config.
> BTW: Will device mapper let me call ->direct_access()
Right now it doesn't, but it's not hard to add..
next prev parent reply other threads:[~2015-03-26 18:38 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-26 8:32 another pmem variant V2 Christoph Hellwig
2015-03-26 8:32 ` [PATCH 1/3] pmem: Initial version of persistent memory driver Christoph Hellwig
2015-03-26 14:12 ` [Linux-nvdimm] " Dan Williams
2015-03-26 14:35 ` Christoph Hellwig
2015-03-26 21:37 ` Ross Zwisler
2015-03-26 14:52 ` Boaz Harrosh
2015-03-26 15:59 ` Dan Williams
2015-03-26 8:32 ` [PATCH 2/3] x86: add a is_e820_ram() helper Christoph Hellwig
2015-03-26 9:02 ` Ingo Molnar
2015-03-26 9:34 ` Christoph Hellwig
2015-03-26 10:04 ` Ingo Molnar
2015-03-26 10:19 ` Christoph Hellwig
2015-03-26 10:28 ` Ingo Molnar
2015-03-26 10:29 ` Christoph Hellwig
2015-03-26 15:49 ` Boaz Harrosh
2015-03-26 16:02 ` [Linux-nvdimm] " Dan Williams
2015-03-26 16:07 ` Boaz Harrosh
2015-03-26 16:43 ` Christoph Hellwig
2015-03-26 18:46 ` Elliott, Robert (Server Storage)
2015-03-26 19:25 ` [Linux-nvdimm] " Dan Williams
2015-03-26 20:53 ` Ross Zwisler
2015-03-26 22:59 ` Yinghai Lu
2015-03-27 8:10 ` Christoph Hellwig
2015-03-26 8:32 ` [PATCH 3/3] x86: add support for the non-standard protected e820 type Christoph Hellwig
2015-03-26 16:57 ` another pmem variant V2 Boaz Harrosh
2015-03-26 17:02 ` [PATCH] SQUASHME: Streamline pmem.c Boaz Harrosh
2015-03-26 17:23 ` Christoph Hellwig
2015-03-26 22:17 ` Ross Zwisler
2015-03-26 22:22 ` Ross Zwisler
2015-03-26 23:31 ` [Linux-nvdimm] " Dan Williams
2015-03-31 13:44 ` Boaz Harrosh
2015-03-26 17:18 ` another pmem variant V2 Christoph Hellwig
2015-03-26 17:31 ` Boaz Harrosh
2015-03-26 18:38 ` Christoph Hellwig [this message]
2015-03-31 9:25 ` Christoph Hellwig
2015-03-31 10:25 ` Boaz Harrosh
2015-03-31 10:31 ` Boaz Harrosh
2015-03-31 14:21 ` [RFC] SQUASHME: pmem: Split up pmem_probe from pmem_alloc Boaz Harrosh
2015-03-31 16:10 ` Christoph Hellwig
2015-03-31 16:08 ` another pmem variant V2 Christoph Hellwig
2015-03-31 13:18 ` [SQUASHME 0/6] Streamline of Initial pmem submission Boaz Harrosh
2015-03-31 13:23 ` [PATCH 1/6] SQUASHME: Don't let e820_PMEM sections Boaz Harrosh
2015-03-31 17:16 ` [Linux-nvdimm] " Brooks, Adam J
2015-03-31 13:24 ` [PATCH 2/6] SQUASHME: pmem: Remove getgeo Boaz Harrosh
2015-03-31 13:25 ` [PATCH 3/6] SQUASHME: pmem: Streamline pmem driver Boaz Harrosh
2015-03-31 13:27 ` [PATCH 4/6] SQUSHME: pmem: Micro cleaning Boaz Harrosh
2015-03-31 15:17 ` [Linux-nvdimm] " Dan Williams
2015-03-31 15:24 ` Boaz Harrosh
2015-03-31 15:30 ` Dan Williams
2015-03-31 15:43 ` Boaz Harrosh
2015-03-31 19:40 ` Matthew Wilcox
2015-03-31 13:28 ` [PATCH 5/6] SQUASHME: pmem: Remove SECTOR_SHIFT Boaz Harrosh
2015-03-31 13:33 ` [PATCH 6/6] SQUASHME: pmem: Remove "... based on brd.c" + Copyright Boaz Harrosh
2015-03-31 15:14 ` another pmem variant V2 Boaz Harrosh
2015-03-31 16:16 ` Christoph Hellwig
2015-03-31 16:44 ` Ingo Molnar
2015-03-31 17:24 ` Christoph Hellwig
2015-03-31 17:33 ` [Linux-nvdimm] " Dan Williams
2015-04-01 7:50 ` Ingo Molnar
2015-04-01 8:06 ` Boaz Harrosh
2015-04-01 12:49 ` Boaz Harrosh
2015-03-31 22:11 ` Elliott, Robert (Server Storage)
2015-04-01 7:26 ` Christoph Hellwig
2015-04-02 15:11 ` Elliott, Robert (Server Storage)
2015-04-02 16:41 ` Christoph Hellwig
2015-04-02 18:03 ` Ingo Molnar
2015-04-01 19:33 ` Elliott, Robert (Server Storage)
2015-04-02 9:37 ` Christoph Hellwig
2015-03-26 18:38 Christoph Hellwig
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