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

[Sasha Levin]

On Fri, 2011-12-16 at 13:32 +0800, zanghongyong@xxxxxxxxxx wrote:
> From: Hongyong Zang <zanghongyong@xxxxxxxxxx>
> 
> 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.

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