2011/4/21 David Daney <dda...@caviumnetworks.com>: > On 04/20/2011 06:02 PM, fykc...@gmail.com wrote: >> >> 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)) >> > > What are you talking about? Sorry, misunderstand it, on "n32", __LP64__ won't be defined, right?
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