[PATCH] Add gdbarch_sizeof_g_packet to "struct remote_arch_state" to handle the issue that get error "Remote 'g' packet reply is too long" with qemu-system-x86_64

[Joel Brobecker]

> Will GDB be hurted if it support bigger size?  Maybe GDB can output a
> warning like "the size that you use is bigger than xxxxxx", And keep
> work.
> But not just tell the user "your target is cheater.  It changed the
> size.  I hate that.  I will not work with it."
> GDB is a debugger but not a judge, right?

Yes, GDB will be hurt if we try applying bandaids for issues
we don't understand. One bandaid doesn't seem like much, but
they accumulate over time, and make long-term maintenance
a lot harder.

We need to understand what is going on before we can determine
whether the fix you are proposing is the best approach.

-- 
Joel