On Mon, May 06, 2019 at 06:30:50PM +0200, Andrey Konovalov wrote: > This patch is a part of a series that extends arm64 kernel ABI to allow to > pass tagged user pointers (with the top byte set to something else other > than 0x00) as syscall arguments. > > This patch adds ksys_ wrappers to the following memory syscalls: > > brk, get_mempolicy (renamed kernel_get_mempolicy -> ksys_get_mempolicy), > madvise, mbind (renamed kernel_mbind -> ksys_mbind), mincore, > mlock (renamed do_mlock -> ksys_mlock), mlock2, mmap_pgoff, > mprotect (renamed do_mprotect_pkey -> ksys_mprotect_pkey), mremap, msync, > munlock, munmap, remap_file_pages, shmat, shmdt. > > The next patch in this series will add a custom implementation for these > syscalls that makes them accept tagged pointers on arm64. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
