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Re: GNU Mach: in user-mode?
From: |
Samuel Thibault |
Subject: |
Re: GNU Mach: in user-mode? |
Date: |
Fri, 5 Jun 2009 17:13:59 +0200 |
User-agent: |
Mutt/1.5.12-2006-07-14 |
Ivan Shmakov, le Fri 05 Jun 2009 22:01:26 +0700, a écrit :
> >> * The time and qualification necessary to deploy one or more
> >> GNU/Linux systems on a single host using User-Mode Linux is (to my
> >> experience) significantly lower than for the other solutions (KVM,
> >> Xen)
>
> > For Xen I agree. For KVM, I don't. Building a UML image is not
> > particularly easier than building a KVM image.
>
> I've implied using rootstrap to build an image.
And you can use debootstrap to build a debian image. There is no
fundamental difference here.
> >> * Running User-Mode Linux doesn't imply any privileged user
> >> intervention (contrary to both KVM and Xen)
>
> > KVM doesn't either.
>
> Nevertheless, it depends on access to /dev/kvm, which is a
> privilege.
Oh, I thought it was given to any user. So they still fear security
breaches...
> There're more differences between UML and KVM. Consider, e. g.,
> the inability to run KVM under KVM
Not that I particularly care :)
> However, what bothers me the most, is the use of hardware
> emulation, leading to:
That, however, is a valid point yes. That's also one of the reason why
I prefer running Mach in Xen than in KVM.
Samuel
Re: GNU Mach: in user-mode?, olafBuddenhagen, 2009/06/16