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SubjectRe: [PATCH v1 0/8] x86_64 SandBox Mode arch hooks
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On 2/14/2024 10:22 AM, Petr Tesařík wrote:
> On Wed, 14 Feb 2024 06:52:53 -0800
> Dave Hansen <dave.hansen@intel.com> 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


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