Re: [PATCH v1 0/8] x86_64 SandBox Mode arch hooks

[Xin Li]

On 2/14/2024 10:22 AM, Petr Tesařík wrote:
> On Wed, 14 Feb 2024 06:52:53 -0800
> Dave Hansen <dave.hansen@xxxxxxxxx> wrote:
>
> > On 2/14/24 03:35, Petr Tesarik wrote:
> > > This patch series implements x86_64 arch hooks for the generic SandBox
> > > Mode infrastructure.
> >
> > I think I'm missing a bit of context here.  What does one _do_ with
> > SandBox Mode?  Why is it useful?
>
> I see, I split the patch series into the base infrastructure and the
> x86_64 implementation, but I forgot to merge the two recipient lists.
> :-(
>
> Anyway, in the long term I would like to work on gradual decomposition
> of the kernel into a core part and many self-contained components.
> Sandbox mode is a useful tool to enforce isolation.
>
> In its current form, sandbox mode is too limited for that, but I'm
> trying to find some balance between "publish early" and reaching a
> feature level where some concrete examples can be shown. I'd rather
> fail fast than maintain hundreds of patches in an out-of-tree branch
> before submitting (and failing anyway).
>
> Petr T

What you're proposing sounds a gigantic thing, which could potentially
impact all subsystems.  Unless you prove it has big advantages with real
world usages, I guess nobody even wants to look into the patches.

BTW, this seems another attempt to get the idea of micro-kernel into
Linux.

--
Thanks!
    Xin