Is the 16KB alignment requirement for 64 bit ABIs?

[Vishal Ratna]

The documentation says

1. If any arm64-v8a or x86_64 shared libraries are UNALIGNED, you'll need to update the packaging for those libraries, then recompile your app and retest by following the steps in this section.
   
   
   What about the libraries that are 
   armeabi-v7a and x86. We do not need to do anything? If not why? Little bit of an explanation would help.

Thanks.

[Dan Albert]

+Steven Moreland 

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[Steven Moreland]

32-bit ABIs don't need to be aligned. This is because 32-bit CPUs don't support 16 KB pages.

[John Dallman]

Is it worth adding the explanation that 32-bit libraries only need to be 4KB aligned, but 64-bit libraries should be 16KB-aligned to the Android Changes for NDK Developers page? 

A sample command for checking libraries could also be worth adding there. I use:

llvm-objdump -p $FILE.SO | grep LOAD

4KB is 2**12 alignment, 16KB is 2**14 alignment. 

https://android.googlesource.com/platform/bionic/+/master/android-changes-for-ndk-developers.md

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