Re: [kvm-devel] [PATCH 0/2] Batch writes to MMIO

[Avi K. <av...@qu...>]

Laurent Vivier wrote:
> These two patches allow to batch writes to MMIO.
>
> When kernel has to send MMIO writes to userspace, it stores them
> in memory until it has to pass the hand to userspace for another
> reason. This avoids to have too many context switches on operations
> that can wait.
>
>   

Did you obtain any measurable performance benefit?

> WARNING: this breaks compatibility with old userspace part.
>
>   

So it's just an RFC :)

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.