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| author | Jason Gunthorpe <jgg@mellanox.com> | 2019-04-24 16:20:34 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-04-24 16:20:34 -0300 |
| commit | 449a224c10a48d047c799c5c5d3b22d6aec98c60 (patch) | |
| tree | 7ecff2cce22ad3875b70a772eae55a443752cfce /include/rdma | |
| parent | 3c176c9d72446217f6451543452692141eb665dc (diff) | |
| parent | 4eb6ab13b99148b5bf9bfdae7977fe139b4452f8 (diff) | |
| download | linux-449a224c10a48d047c799c5c5d3b22d6aec98c60.tar.bz2 | |
Merge branch 'rdma_mmap' into rdma.git for-next
Jason Gunthorpe says:
====================
Upon review it turns out there are some long standing problems in BAR
mapping area:
* BAR pages intended for read-only can be switched to writable via mprotect.
* Missing use of rdma_user_mmap_io for the mlx5 clock BAR page.
* Disassociate causes SIGBUS when touching the pages.
* CPU pages are being mapped through to the process via remap_pfn_range
instead of the more appropriate vm_insert_page, causing weird behaviors
during disassociation.
This series adds the missing VM_* flag manipulation, adds faulting a zero
page for disassociation and revises the CPU page mappings to use
vm_insert_page.
====================
For dependencies this branch is based on for-rc from
git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
* branch 'rdma_mmap':
RDMA: Remove rdma_user_mmap_page
RDMA/mlx5: Use get_zeroed_page() for clock_info
RDMA/ucontext: Fix regression with disassociate
RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages
RDMA/mlx5: Do not allow the user to write to the clock page
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 43a75ab8ea8a..737ef5ed3930 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2724,9 +2724,6 @@ void ib_set_device_ops(struct ib_device *device, #if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS) int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma, unsigned long pfn, unsigned long size, pgprot_t prot); -int rdma_user_mmap_page(struct ib_ucontext *ucontext, - struct vm_area_struct *vma, struct page *page, - unsigned long size); #else static inline int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma, @@ -2735,12 +2732,6 @@ static inline int rdma_user_mmap_io(struct ib_ucontext *ucontext, { return -EINVAL; } -static inline int rdma_user_mmap_page(struct ib_ucontext *ucontext, - struct vm_area_struct *vma, struct page *page, - unsigned long size) -{ - return -EINVAL; -} #endif static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |