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Re: [Qemu-devel] did the qemu can emulate the whole system with the proc

From: tugouxp
Subject: Re: [Qemu-devel] did the qemu can emulate the whole system with the processor that without support the "virtulization and kvm"?
Date: Fri, 21 Dec 2018 19:40:24 +0800 (CST)

thank you.
i just want to confirm one thing,  that is whether the qemu can emulate a whole 
operation system just by analysis instructions by instructions manually  
without the support of KVM.
so from the answer you give to me, it is feasible, right?

thanks very much!

At 2018-12-21 17:01:02, "Alex Bennée" <address@hidden> wrote:
>tugouxp <address@hidden> writes:
>> Hi alex:
>>     now my host machine did not have the "/dev/kvm" nodes and no chance to 
>> make it exists.
>> so i want to know whether the "/dev/kvm" is  mandatory  for qemu to emulate 
>> the whole system.
>> so i can make the emulation without the support of kvm mechanism.
>QEMU runs in two modes - full system emulation with TCG doesn't require
>KVM although it is relatively slow. On systems where there guest
>architecture is the same as the host architecture you can run with KMV
>(or HAX/WHPX/HVF) accelerators at near native speeds.
>The reasons for not having a /dev/kvm can vary but you haven't said what
>your host architecture is and what OS you are running so it's hard to
>offer advice here.
>Alex Bennée

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