From: Zhou Wang <wangzhou1@hisilicon.com>
To: <linux-kernel@vger.kernel.org>,
<iommu@lists.linux-foundation.org>, <linux-mm@kvack.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-api@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>
Cc: jean-philippe@linaro.org, kevin.tian@intel.com, jgg@ziepe.ca,
gregkh@linuxfoundation.org, zhangfei.gao@linaro.org,
liguozhu@hisilicon.com
Subject: [RFC PATCH v3 0/2] mempinfd: Add new syscall to provide memory pin
Date: Sun, 7 Feb 2021 16:18:02 +0800 [thread overview]
Message-ID: <1612685884-19514-1-git-send-email-wangzhou1@hisilicon.com> (raw)
This series adds a new mempinfd syscall to offer a common way to pin/unpin
memory.
Patch 1/2 is about mempinfd codes.
Patch 2/2 adds a simple test tool about mempinfd.
Change logs:
------------
v2 -> v3:
- Follow suggestions from Greg and Kevin, add a new syscall.
- Add input check.
- Use xa_insert to replace xa_store.
- Add lock to pretect pin and xa_insert.
v1 -> v2:
- Some tiny fixes.
- Follow Greg's suggestion to get mm-list and iommu-list involved.
Links:
------
- v2: https://www.spinics.net/lists/kernel/msg3808926.html
- v1: https://www.spinics.net/lists/kernel/msg3805205.html
Zhou Wang (2):
mempinfd: Add new syscall to provide memory pin
selftests/vm: add mempinfd test
arch/arm64/include/asm/unistd.h | 2 +-
arch/arm64/include/asm/unistd32.h | 2 +
fs/Makefile | 1 +
fs/mempinfd.c | 199 ++++++++++++++++++++++++++++++++++
include/linux/syscalls.h | 1 +
include/uapi/asm-generic/unistd.h | 4 +-
include/uapi/linux/mempinfd.h | 23 ++++
init/Kconfig | 6 +
tools/testing/selftests/vm/Makefile | 1 +
tools/testing/selftests/vm/mempinfd.c | 131 ++++++++++++++++++++++
10 files changed, 368 insertions(+), 2 deletions(-)
create mode 100644 fs/mempinfd.c
create mode 100644 include/uapi/linux/mempinfd.h
create mode 100644 tools/testing/selftests/vm/mempinfd.c
--
2.8.1
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next reply other threads:[~2021-02-07 8:26 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-07 8:18 Zhou Wang [this message]
2021-02-07 8:18 ` [RFC PATCH v3 1/2] mempinfd: Add new syscall to provide memory pin Zhou Wang
2021-02-07 21:34 ` Matthew Wilcox
2021-02-07 22:24 ` Song Bao Hua (Barry Song)
2021-02-08 1:30 ` Matthew Wilcox
2021-02-08 2:27 ` Song Bao Hua (Barry Song)
2021-02-08 8:21 ` David Hildenbrand
2021-02-08 10:13 ` Song Bao Hua (Barry Song)
2021-02-08 10:37 ` David Hildenbrand
2021-02-08 20:52 ` Song Bao Hua (Barry Song)
2021-02-08 2:18 ` David Rientjes via iommu
2021-02-08 5:34 ` Song Bao Hua (Barry Song)
2021-02-07 21:51 ` Arnd Bergmann
2021-02-09 9:27 ` Zhou Wang
2021-02-07 22:02 ` Andy Lutomirski
2021-02-09 9:17 ` Zhou Wang
2021-02-09 9:37 ` Greg KH
2021-02-09 11:58 ` Zhou Wang
2021-02-09 12:01 ` Greg KH
2021-02-09 12:20 ` Zhou Wang
2021-02-10 18:50 ` Matthew Wilcox
2021-02-08 8:14 ` David Hildenbrand
2021-02-08 18:33 ` Jason Gunthorpe
2021-02-08 20:35 ` Song Bao Hua (Barry Song)
2021-02-08 21:30 ` Jason Gunthorpe
2021-02-09 3:01 ` Song Bao Hua (Barry Song)
2021-02-09 13:53 ` Jason Gunthorpe
2021-02-09 22:22 ` Song Bao Hua (Barry Song)
2021-02-10 18:04 ` Jason Gunthorpe
2021-02-10 21:39 ` Song Bao Hua (Barry Song)
2021-02-11 10:28 ` David Hildenbrand
2021-02-07 8:18 ` [RFC PATCH v3 2/2] selftests/vm: add mempinfd test Zhou Wang
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