* [PATCH 0/6] memfd: add sealing to hugetlb-backed memory
@ 2017-10-31 18:30 Marc-André Lureau
0 siblings, 0 replies; 2+ messages in thread
From: Marc-André Lureau @ 2017-10-31 18:30 UTC (permalink / raw)
To: linux-mm, linux-kernel
Cc: aarcange, hughd, nyc, mike.kravetz, Marc-André Lureau
Hi,
Recently, Mike Kravetz added hugetlbfs support to memfd. However, he
didn't add sealing support. One of the reasons to use memfd is to have
shared memory sealing when doing IPC or sharing memory with another
process with some extra safety. qemu uses shared memory & hugetables
with vhost-user (used by dpdk), so it is reasonable to use memfd
now instead for convenience and security reasons.
Thanks!
RFC->v1:
- split rfc patch, after early review feedback
- added patch for memfd-test changes
- fix build with hugetlbfs disabled
- small code and commit messages improvements
Marc-André Lureau (6):
shmem: unexport shmem_add_seals()/shmem_get_seals()
shmem: rename functions that are memfd-related
hugetlb: expose hugetlbfs_inode_info in header
hugetlbfs: implement memfd sealing
shmem: add sealing support to hugetlb-backed memfd
memfd-tests: test hugetlbfs sealing
fs/fcntl.c | 2 +-
fs/hugetlbfs/inode.c | 39 +++++---
include/linux/hugetlb.h | 11 +++
include/linux/shmem_fs.h | 6 +-
mm/shmem.c | 59 +++++++-----
tools/testing/selftests/memfd/memfd_test.c | 150 +++--------------------------
6 files changed, 89 insertions(+), 178 deletions(-)
--
2.15.0.rc0.40.gaefcc5f6f
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH 0/6] memfd: add sealing to hugetlb-backed memory
@ 2017-10-31 18:40 Marc-André Lureau
0 siblings, 0 replies; 2+ messages in thread
From: Marc-André Lureau @ 2017-10-31 18:40 UTC (permalink / raw)
To: linux-mm, linux-kernel
Cc: aarcange, hughd, nyc, mike.kravetz, Marc-André Lureau
Hi,
Recently, Mike Kravetz added hugetlbfs support to memfd. However, he
didn't add sealing support. One of the reasons to use memfd is to have
shared memory sealing when doing IPC or sharing memory with another
process with some extra safety. qemu uses shared memory & hugetables
with vhost-user (used by dpdk), so it is reasonable to use memfd
now instead for convenience and security reasons.
Thanks!
RFC->v1:
- split rfc patch, after early review feedback
- added patch for memfd-test changes
- fix build with hugetlbfs disabled
- small code and commit messages improvements
Marc-André Lureau (6):
shmem: unexport shmem_add_seals()/shmem_get_seals()
shmem: rename functions that are memfd-related
hugetlb: expose hugetlbfs_inode_info in header
hugetlbfs: implement memfd sealing
shmem: add sealing support to hugetlb-backed memfd
memfd-tests: test hugetlbfs sealing
fs/fcntl.c | 2 +-
fs/hugetlbfs/inode.c | 39 +++++---
include/linux/hugetlb.h | 11 +++
include/linux/shmem_fs.h | 6 +-
mm/shmem.c | 59 +++++++-----
tools/testing/selftests/memfd/memfd_test.c | 150 +++--------------------------
6 files changed, 89 insertions(+), 178 deletions(-)
--
2.15.0.rc0.40.gaefcc5f6f
^ permalink raw reply [flat|nested] 2+ messages in thread
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