2011/4/21 David Daney <dda...@caviumnetworks.com>: >> Any comment whether this will break non-MIPS 32bit archs, like x86? > > It would break the MIPS n32 ABI userspace. > > On MIPS n32 we are still __LP64__, but 64-bit values are passed in a single > register. It isn't a problem. n32 syscall supports 64bit registers, and 64-bit values should be passed in a single register. see http://lxr.linux.no/linux+v2.6.38/arch/mips/kernel/scall64-n32.S#L426 (calls sys_fanotify_mark instead of sys_32_fanotify_mark, sys_fanotify_mark won't merge_64(mask_low, merge_high))
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