Re: [Qemu-devel] [PATCH 11/10] tcg: comment on which functions have to be called with tb_lock held

[Paolo Bonzini]

On 13/08/2015 17:32, Peter Maydell wrote:
>> > TBs are physically-tagged so invalidates are not too frequent unless the
>> > guest does self-modifying code or swaps.  They shouldn't be a source of
>> > tb_lock contention except if you do SMC (not just dynamic recompilation:
>> > really self-modifying code).
> Do guests with writeable data and code in the same page also
> get treated as SMC for these purposes? (That's more common
> than real SMC.)

Not after a short while, when the code_bitmap kicks in.

Paolo