From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Jerome Glisse <j.glisse@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Boaz Harrosh <boaz@plexistor.com>, Rik van Riel <riel@redhat.com>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
david <david@fromorbit.com>, Ingo Molnar <mingo@kernel.org>,
Linux MM <linux-mm@kvack.org>, Ingo Molnar <mingo@redhat.com>,
Mel Gorman <mgorman@suse.de>, "H. Peter Anvin" <hpa@zytor.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [RFC PATCH 1/7] x86, mm: ZONE_DEVICE for "device memory"
Date: Sat, 15 Aug 2015 10:59:54 +0200 [thread overview]
Message-ID: <20150815085954.GC21033@lst.de> (raw)
In-Reply-To: <CAPcyv4ib244VMSdhHDWHRnmCvYdteUEzT+ehTzitSY42m2Tt=w@mail.gmail.com>
On Fri, Aug 14, 2015 at 02:52:15PM -0700, Dan Williams wrote:
> The idea is that this memory is not meant to be available to the page
> allocator and should not count as new memory capacity. We're only
> hotplugging it to get struct page coverage.
This might need a bigger audit of the max_pfn usages. I remember
architectures using it as a decisions for using IOMMUs or similar.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-08-15 9:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-13 3:50 [RFC PATCH 0/7] 'struct page' driver for persistent memory Dan Williams
2015-08-13 3:50 ` [RFC PATCH 1/7] x86, mm: ZONE_DEVICE for "device memory" Dan Williams
2015-08-14 21:37 ` Jerome Glisse
2015-08-14 21:52 ` Dan Williams
2015-08-14 22:06 ` Jerome Glisse
2015-08-14 22:33 ` Dan Williams
2015-08-15 2:11 ` Dan Williams
2015-08-17 21:45 ` Jerome Glisse
2015-08-18 0:46 ` Dan Williams
2015-08-18 16:55 ` Jerome Glisse
2015-08-18 17:23 ` Dan Williams
2015-08-18 19:06 ` Jerome Glisse
2015-08-20 0:49 ` Dan Williams
2015-08-15 8:59 ` Christoph Hellwig [this message]
2015-08-21 15:02 ` Dan Williams
2015-08-21 15:15 ` Jerome Glisse
2015-08-15 13:33 ` Christoph Hellwig
2015-08-13 3:50 ` [RFC PATCH 2/7] x86, mm: introduce struct vmem_altmap Dan Williams
2015-08-13 3:50 ` [RFC PATCH 3/7] x86, mm: arch_add_dev_memory() Dan Williams
2015-08-13 3:50 ` [RFC PATCH 4/7] mm: register_dev_memmap() Dan Williams
2015-08-15 9:04 ` Christoph Hellwig
2015-08-13 3:50 ` [RFC PATCH 5/7] libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option Dan Williams
2015-08-15 9:06 ` Christoph Hellwig
2015-08-15 15:28 ` Dan Williams
2015-08-15 15:58 ` Christoph Hellwig
2015-08-15 16:04 ` Dan Williams
2015-08-17 15:01 ` Christoph Hellwig
2015-08-17 15:32 ` Dan Williams
2015-08-13 3:50 ` [RFC PATCH 6/7] libnvdimm, pfn: 'struct page' provider infrastructure Dan Williams
2015-08-13 3:50 ` [RFC PATCH 7/7] libnvdimm, pmem: 'struct page' for pmem Dan Williams
2015-08-15 9:01 ` [RFC PATCH 0/7] 'struct page' driver for persistent memory Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150815085954.GC21033@lst.de \
--to=hch@lst.de \
--cc=boaz@plexistor.com \
--cc=dan.j.williams@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=david@fromorbit.com \
--cc=hpa@zytor.com \
--cc=j.glisse@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-nvdimm@lists.01.org \
--cc=mgorman@suse.de \
--cc=mingo@kernel.org \
--cc=mingo@redhat.com \
--cc=riel@redhat.com \
--cc=ross.zwisler@linux.intel.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).