Question to Torvalds

By: Maynard Handley (name99.delete@this.name99.org), January 11, 2021 9:33 am
Room: Moderated Discussions
Jukka Larja (roskakori2006.delete@this.gmail.com) on January 11, 2021 5:21 am wrote:
> Maynard Handley (name99.delete@this.name99.org) on January 9, 2021 3:12 pm wrote:
>
> > I ask this seriously: what does achieving raw metal linux achieve over VM linux?
>
> Let's turn this around: why would someone want to run anything
> in a VM, if there's no downside to run on bare metal?

This is like asking "why write code for iOS (or Windows, or Linux", I'll write to the bare metal.
Yes, writing direct to the CPU gives you more control. It also requires you to give up the capabilities that the OS provides, give up a lot of security, give up a protocol for resource sharing.
Writing to the C virtual machine gives up something compared to writing in assembly, but provides value in return.

What you get by running your 3rd part OS in a VM is a resource sharing protocol (with other OS's), the Apple security guarantees, and a ton of pre-existing code in the form of drivers and suchlike.

Apple appears, pretty clearly, to believe that going forward providing VM support for alternative OS's is a good enough solution for most needs.
I'm trying to see if they are wrong (or at least limited) about that on technical grounds.
So far all I've learned is that they're massively wrong on theological grounds (for some particular theologies) but not on anything that I would call a technical ground.

That's the limit of my interest. Go back to theology the rest of you. I have very little interest in that ongoing debate: "Apple: Satan incarnate? Or king of the devils?"
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      Question to TorvaldsMaynard Handley2021/01/09 03:12 PM
        He asked disingenuously (NT)JS2021/01/09 07:33 PM
          He asked disingenuouslyMaynard Handley2021/01/10 09:51 AM
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        Question to TorvaldsJukka Larja2021/01/11 05:21 AM
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            Question to Torvaldsanon22021/01/11 09:40 PM
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                                    Question to Torvaldsdmcq2021/01/17 09:01 AM
                                      Question to TorvaldsJukka Larja2021/01/17 09:52 AM
            Question to TorvaldsDoug S2021/01/14 09:37 AM
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