From: Dan Williams <dan.j.williams@intel.com>
To: linux-nvdimm@lists.01.org
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/2] devm_memremap_pages vs section-misaligned pmem
Date: Mon, 29 Feb 2016 18:56:20 -0800 [thread overview]
Message-ID: <20160301025620.12812.87268.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
Recent testing uncovered two bugs around the handling of section-misaligned
pmem regions:
1/ If the pmem section overlaps "System RAM" we need to fail the
devm_memremap_pages() request. Previously we would mis-detect a
memory map like the following:
100000000-37bffffff : System RAM
37c000000-837ffffff : Persistent Memory
2/ If the pmem section is misaligned, but otherwise does not overlap
memory from another zone, the altmap needs to be fixed up to add the
alignment padding to the 'reserved ' pfns of the altmap.
---
Dan Williams (2):
libnvdimm, pmem: fix 'pfn' support for section-misaligned namespaces
mm: fix mixed zone detection in devm_memremap_pages
drivers/nvdimm/pmem.c | 29 +++++++++++++++++++++++++++--
kernel/memremap.c | 9 ++++-----
2 files changed, 31 insertions(+), 7 deletions(-)
--
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 reply other threads:[~2016-03-01 2:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-01 2:56 Dan Williams [this message]
2016-03-01 2:56 ` [PATCH 1/2] libnvdimm, pmem: fix 'pfn' support for section-misaligned namespaces Dan Williams
2016-03-01 3:16 ` kbuild test robot
2016-03-01 2:56 ` [PATCH 2/2] mm: fix mixed zone detection in devm_memremap_pages Dan Williams
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=20160301025620.12812.87268.stgit@dwillia2-desk3.amr.corp.intel.com \
--to=dan.j.williams@intel.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-nvdimm@lists.01.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).