Subject: Re: [PATCH 0/2] vhot-net: Use kvm_memslots instead of vhost_memory to translate GPA to HVA

From: Sasha Levin <[email-masked]>
Date: Fri, 16 Dec 2011 09:05:51 +0200

On Fri, 2011-12-16 at 13:32 +0800, [email-masked] wrote:
> From: Hongyong Zang <[email-masked]>
> 
> Vhost-net uses its own vhost_memory, which results from user space (qemu) info,
> to translate GPA to HVA. Since kernel's kvm structure already maintains the 
> address relationship in its member *kvm_memslots*, these patches use kernel's 
> kvm_memslots directly without the need of initialization and maintenance of 
> vhost_memory.

Conceptually, vhost isn't aware of KVM - it's just a driver which moves
data from vq to a tap device and back. You can't simply add KVM specific
code into vhost.

Whats the performance benefit?

-- 

Sasha.