On 3/31/25 10:54, Nicholas Piggin wrote:
Add an option TARGET_HAS_LAZY_ICACHE that does not invalidate TBs upon store, but instead tracks that the icache has become incoherent, and provides a tb_flush_incoherent() function that the target may call to bring the TB back to coherency.
We're not going to add another target specific ifdef, as we're working on removing all of them. If we were to add a feature like this, it would need to be done another way -- probably via TCGCPUOps.
How much benefit did you measure for ppc for this?
XXX: docs/devel/tcg.rst says that this is not permitted because TB must be coherent with memory to handle exceptions correctly... I'm not sure where this is, maybe it can be worked around and is not a showstopper?
I presume that note was for x86. r~
