agraf

@agraf@fosstodon.org

Principal Engineer at Amazon. QEMU enthusiast. Enjoys working on KVM/Virtualization, Emulation, RE, Booting, Security, s390x, PowerPC, ARM. @_AlexGraf on Twitter.

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mjg59, to random
@mjg59@nondeterministic.computer avatar

My annual plea for a thing: I want a type 1 hypervisor that just has a small isolated VM and then passes through the rest of the hardware to the main VM which runs Linux. The small VM is intended to be used to run small pieces of code that the main OS should not be able to interfere with. Does such a thing exist? (Think Xen, but with a Dom0 that can't see into DomUs)

agraf,

@mjg59 sounds pretty close to Jailhouse?

agraf,

@mjg59 I'm not sure how much both of these are embedded into its architecture or just artifacts of how its main users consume it.

agraf, to random

On my way to #FOSDEM / #fosdem2024. Please get in touch if you want to catch up on #QEMU, #KVM, #UEFI, #EC2 or related topics!

bert_hubert, to random
@bert_hubert@fosstodon.org avatar

Europe has no position in "cloud" at all, but (government) initiatives abound to change this. In the post below I argue that AWS & friends are "IKEA clouds", attractive because they offer everything. And no one can compete with IKEA. I also argue that modern clouds are incredibly advanced (like airliners), and that you don't just replicate those either. Instead, Europe might might be better served by a narrower initial ambition:
https://berthub.eu/articles/posts/taking-the-airbus-to-the-ikea-cloud/

agraf,

@bert_hubert As a European working in an EU based team that owns the core of EC2, I halfway agree with the statements. The analogies are great. But "US based hyperscalers" are surprisingly global. That means dependency is mutual: Breaking ties would severely hurt both parties.

IMHO if you add great software design that is built for no operator access with EU operators, you get 99% of what a nationally built cloud could provide: https://aws.amazon.com/compliance/europe-digital-sovereignty/

agraf, to random

Finally, v1 of my Kexec HandOver (KHO) patch set is out! 🥳

With that patch set, you can transfer ftrace contents between kexecs: Create trace events before kexec, read them out after kexec. It's the first step towards preserving much more across kexec. This is most useful for hypervisors to update themselves while virtual machines are still "running". But I'm convinced there are more applications :).

https://lore.kernel.org/lkml/20231213000452.88295-1-graf@amazon.com

kernellogger, to linux
@kernellogger@fosstodon.org avatar

#Reiserfs in the #Linux mainline #kernel's MAINTAINERS file is now considered "Obsolete":

To quote https://git.kernel.org/torvalds/c/2363650b22ed3c8bbe7700789e399a77096ac931:

"""MAINTAINERS: change reiserfs status to obsolete

Reiserfs file system is no longer supported and is going to be removed in 2025 as stated in commit eb103a51640e ("reiserfs: Deprecate reiserfs").""" #LinuxKernel

agraf,

@kernellogger most of these are not super performance critical and could easily live in user space. That would give you easier maintenance (stable ABI to Linux) and still allow everyone to use old FSs.

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