On Thu, Jul 20, 2017 at 10:42 AM, Chris Peterson <cpeter...@mozilla.com> wrote:
> Users with only 2 GB and 5 minute browser sessions would probably have a
> faster user experience with 32-bit Firefox than with 64-bit, but how do we
> weigh that experience versus the security benefits of ASLR?

Not giving users a security mechanism due to a non-obvious reason
feels bad. Furthermore, considering that Microsoft documents 2 GB as a
"requirement" for 64-bit Windows, is it really worthwhile for us to
treat three Windows pointer size combinations (32-bit on 32-bit,
64-bit on 64-bit and 32-bit on 64-bit) as fully supported when one of
the combinations is in contradiction with the OS vendor's stated

Do we have any metrics on whether 32-bit on 64-bit exhibits bugs that
32-bit on 32-bit and 64-bit on 64-bit don't? That is, what kind of bug
burden are we keeping by catering to users who've installed 64-bit
Windows with less than 2 GB of RAM in contradiction with what
Microsoft states as a requirement?

Henri Sivonen
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