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gso321
n00b
Joined: 02 Jan 2023
Posts: 15
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 Posted: Fri Jun 02, 2023 12:33 pm Post subject: Using Unikernel Linux? |
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| Anyone here tried to use the unikernel patch in Gentoo? |
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Zucca
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Joined: 14 Jun 2007
Posts: 3345
Location: Rasi, Finland
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| Posted: Sun Jul 16, 2023 11:10 pm Post subject: |
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Seems like there wouldn't be that much benefit.
| H. Peter Anvin wrote: | This is basically taking Linux and turning it into a whole new operating system, while expecting the Linux kernel community to carry the support burden thereof.
We have seen this before, notably with Xen. It is *expensive* and *painful* for the maintenance of the mainstream kernel.
Linux already has a notion of "kernel mode applications", they are called kernel modules and kernel threads. It seems to me that you are trying to introduce a user space compatibility layer into the kernel, with the only benefit being avoiding the syscall overhead. The latter is bigger than we would like, which is why we are changing the x86 hardware architecture to improve it.
In my opinion, this would require *enormous* justification to put it into mainline. |
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Goverp
Advocate
Joined: 07 Mar 2007
Posts: 2007
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| Posted: Mon Jul 17, 2023 8:07 am Post subject: |
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I noticed that too, and wondered about using it for running an hardware emulator to create a fake hardware device. I haven't investigated further than wondering if the setup would allow a glibc equivalent, or the application part to be written specifically for this environment, in which case IMHO it's no use. The answer to that question may well be in the docs, TL;DR 
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