On Wed, Mar 09, 2011 at 02:19:30PM +0900, KOSAKI Motohiro wrote: > Hmm.. > Is this works? In exec() case task has two mm, old and new-borned. tsk has > no enough information to detect gate area if 64bit process exec 32bit process > or oppsite case. On Linux, 32bit and 64bit processes have perfectly different > process vma layout. > > Am I missing something? Patch series refered to in [0/6] ;-) FWIW, that would probably be better off as one mail thread - would be easier to find. What happens is that mm_struct gets marked as 32bit/64bit at execve time (on x86, everything else doesn't care), so this stuff becomes possible to calculate by mm_struct alone. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>