Re: [RFC PATCH 00/23] accel/tcg: Convert victim tlb to IntervalTree

[Richard Henderson]

On 10/9/24 17:50, Pierrick Bouvier wrote:
> > Eventually fixing the page size > TARGET_PAGE_SIZE performance issues.
> >
> > E.g. with a 16k or 64k aarch64 guest kernel, we still have TARGET_PAGE_SIZE at 
> > 4k, so all
> > guest pages are "large", and so run into our current behaviour of flushing the 
> > entire tlb
> > too often.
> >
> > Even without that, I expect further cleanups to improve performance, we're just not 
> > there yet.
> >
> >
> > r~
>
> Does merging pages over a given range be something we could benefit from too? In this 
> case, entries in our tlbtree would have varying size, allowing us to cover more space with 
> a single entry.

I don't know.  I kinda doubt it, because of tlb flushing mechanics.
But we shall see once everything up until that point is done.


r~