I'm wondering why you couldn't rely on pages containing non-native code being marked "no execute" instead. Trapping into kernel mode might be slower, but for bi

I'm wondering why you couldn't rely on pages containing non-native code being marked "no execute" instead. Trapping into kernel mode might be slower, but for binaries that are mostly ARM, the expected case would be that the bitmap check always succeeds - and it there was such a fallback method of switching to emulated code, the compiler would then be free to either omit the check or leave it in, based on profiling information?