From: Dan Williams <dan.j.williams@intel.com>
To: Jerome Glisse <j.glisse@gmail.com>
Cc: "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: Wed, 19 Aug 2015 17:49:54 -0700 [thread overview]
Message-ID: <CAPcyv4gLVLWcyS5FWHgm37d7PDwzA03VStomgt37cevfDv7ojQ@mail.gmail.com> (raw)
In-Reply-To: <20150818190634.GB7424@gmail.com>
On Tue, Aug 18, 2015 at 12:06 PM, Jerome Glisse <j.glisse@gmail.com> wrote:
> On Tue, Aug 18, 2015 at 10:23:38AM -0700, Dan Williams wrote:
> Thought maybe you don't need a new ZONE_DEV and all you need is valid
> struct page for this device memory, and you don't want this page to be
> useable by the general memory allocator. There is surely other ways to
> achieve that like marking all as reserved when you hotplug them.
>
Yes, there are other ways that can achieve the same thing, but I do
like the ability to do reverse page to zone lookups for debug if
anything.
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next prev parent reply other threads:[~2015-08-20 0:49 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 [this message]
2015-08-15 8:59 ` Christoph Hellwig
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
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