From: Jason Gunthorpe Date: Wed, 24 Apr 2019 19:20:34 +0000 (-0300) Subject: Merge branch 'rdma_mmap' into rdma.git for-next X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=449a224c10a48d047c799c5c5d3b22d6aec98c60;p=linux.git 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 --- 449a224c10a48d047c799c5c5d3b22d6aec98c60