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Re: [Qemu-devel] [RFC] Is it useful to create a seperate address space f
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [RFC] Is it useful to create a seperate address space for cpu-memory on x86 platform? |
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Date: |
Fri, 26 May 2017 13:06:35 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 |
On 26/05/2017 11:59, Gonglei (Arei) wrote:
> The result before this commit:
>
> linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
> root 12658 17.2 0.0 375996 21412 pts/1 Sl+ 12:53 0:00
> ./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off
> -nodefaults
>
> after the commit:
>
> linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
> root 23201 17.2 0.0 384196 25736 pts/1 Sl+ 12:54 0:00
> ./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off
> -nodefaults
>
> I couldn't find any benefits on x86 platform (I'm not familiar with ARM), am
> I missing something?
Hi,
this was also reported by Anthony Xu. I am working on reducing the time
and space cost of multiple address spaces by sharing the FlatView and
AddressSpaceDispatch.
Paolo