Also... an important couple of features:

TLS works on certain hardware (e.g. with hardware supported tls, like
armv7a), but not on all architectures, like in GNU [1], [2]. It's
probably better to blanket-disable this for now via a portage profile
variable.

SMP does not currently work OOTB. There are some patches floating
around[3], with issues that mainly lie outside of bionic, but I the
'official' SMP code will be available whenever Honeycomb is
released[4] ... which is of course whenever Google decides to do
release Honeycomb.

C

[1] http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Thread-Local.html#Thread-Local
[2] http://www.akkadia.org/drepper/tls.pdf
[3] 
http://groups.google.com/group/android-platform/browse_thread/thread/de20f1b10703acc2
[4] http://developer.android.com/sdk/android-3.0-highlights.html#multicore

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