On Fri, 2019-06-07 at 14:09 -0700, Dave Hansen wrote: > On 6/7/19 1:06 PM, Yu-cheng Yu wrote: > > > Huh, how does glibc know about all possible past and future legacy code > > > in the application? > > > > When dlopen() gets a legacy binary and the policy allows that, it will > > manage > > the bitmap: > > > > If a bitmap has not been created, create one. > > Set bits for the legacy code being loaded. > > I was thinking about code that doesn't go through GLIBC like JITs. If JIT manages the bitmap, it knows where it is. It can always read the bitmap again, right? Yu-cheng
