From: Jia He <justin.he@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
David Hildenbrand <david@redhat.com>
Cc: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Dan Williams <dan.j.williams@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Baoquan He <bhe@redhat.com>, Chuhong Yuan <hslester96@gmail.com>,
Mike Rapoport <rppt@linux.ibm.com>,
Logan Gunthorpe <logang@deltatee.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Michal Hocko <mhocko@suse.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-sh@vger.kernel.org, linux-nvdimm@lists.01.org,
linux-mm@kvack.org,
Jonathan Cameron <Jonathan.Cameron@Huawei.com>,
Kaly Xin <Kaly.Xin@arm.com>, Jia He <justin.he@arm.com>
Subject: [PATCH v4 0/2] Fix and enable pmem as RAM device on arm64
Date: Fri, 10 Jul 2020 11:16:17 +0800 [thread overview]
Message-ID: <20200710031619.18762-1-justin.he@arm.com> (raw)
This fixies a few issues when I tried to enable pmem as RAM device on arm64.
To use memory_add_physaddr_to_nid as a fallback nid, it would be better
implement a general version (__weak) in mm/memory_hotplug. After that, arm64/
sh/s390 can simply use the general version, and PowerPC/ia64/x86 will use
arch specific version.
Tested on ThunderX2 host/qemu "-M virt" guest with a nvdimm device. The
memblocks from the dax pmem device can be either hot-added or hot-removed
on arm64 guest. Also passed the compilation test on x86.
Changes:
v4: - remove "device-dax: use fallback nid when numa_node is invalid", wait
for Dan Williams' phys_addr_to_target_node() patch
- folder v3 patch1-4 into single one, no functional changes
v3: https://lkml.org/lkml/2020/7/8/1541
- introduce general version memory_add_physaddr_to_nid, refine the arch
specific one
- fix an uninitialization bug in v2 device-dax patch
v2: https://lkml.org/lkml/2020/7/7/71
- Drop unnecessary patch to harden try_offline_node
- Use new solution(by David) to fix dev->target_node=-1 during probing
- Refine the mem_hotplug_begin/done patch
v1: https://lkml.org/lkml/2020/7/5/381
Jia He (2):
mm/memory_hotplug: introduce default dummy
memory_add_physaddr_to_nid()
mm/memory_hotplug: fix unpaired mem_hotplug_begin/done
arch/arm64/mm/numa.c | 10 ----------
arch/ia64/mm/numa.c | 2 --
arch/sh/mm/init.c | 9 ---------
arch/x86/mm/numa.c | 1 -
mm/memory_hotplug.c | 15 ++++++++++++---
5 files changed, 12 insertions(+), 25 deletions(-)
--
2.17.1
next reply other threads:[~2020-07-10 3:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 3:16 Jia He [this message]
2020-07-10 3:16 ` [PATCH 1/2] mm/memory_hotplug: introduce default dummy memory_add_physaddr_to_nid() Jia He
2020-07-10 3:16 ` [PATCH 2/2] mm/memory_hotplug: fix unpaired mem_hotplug_begin/done Jia He
2020-07-10 8:30 ` [PATCH v4 0/2] Fix and enable pmem as RAM device on arm64 David Hildenbrand
2020-07-10 13:13 ` Justin He
2020-07-10 14:00 ` Dan Williams
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