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Alex

@stsquad@mastodon.org.uk
mastodon 4.7.2
  • Open on mastodon.org.uk

Code poet and real ale aficionado. Low level trouble maker for Linaro working on virtualisation (#QEMU, #KVM, #VirtIO). Uses the one true editor (#emacs) to do pretty much everything.

As an experiment searchable via tootfinder.

466 Followers
395 Following
17 Posts
Joined June 15, 2017
website:
https://www.bennee.com/~alex
gitlab:
https://gitlab.com/stsquad
github:
https://github.com/stsquad
Interests:
floss, qemu, emulation, beer, emacs
Open post
Alex @stsquad@mastodon.org.uk
· 5mo ago

#qemu's #usermode #emulation is now officially orphaned with its #linux and #bsd parts having been set at "Odd Fixes" for some time now. We know usermode is heavily used by cross compilers and compilers for unit testing but the current lack of maintainer cover is unsustainable in the long term.

Mastodon.org.uk

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Open post
Alex @stsquad@mastodon.org.uk
· 1mo ago
I like #bruceschneir's work Vs gym metaphor here: Should You Use AI for a Task? https://www.schneier.com/blog/archives/2026/07/should-you-use-ai-for-a-task-heres-a-simple-way-to-decide.html Found via @gregkh@kernel.social 's notes on #llm's for the #staging tree.
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Open post
Alex @stsquad@mastodon.org.uk
· 2mo ago
Replying to @kjetil_kilhavn@snabelen.no
@kjetil_kilhavn@snabelen.no We've been experimenting with AI reviews and they do catch stuff but there are enough false positives that I'm not sure it's the timesaver it could be. If I could tune then down to just reliably catch the common gotchas of new contributors then perhaps it could take some of the load of the reviewers and leave them to concentrate on the wider architectural stuff. @jwildeboer@social.wildeboer.net
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Open post
Alex @stsquad@mastodon.org.uk
· 4mo ago

Working in code is much easier than trying to align and drop things with the #freecad tools. I need a better way cut out the excess though - some sort of plane operation? I think I'll use more #openscad in future. https://github.com/stsquad/gridfinity-rebuilt-openscad/tree/add-handle

Mastodon.org.uk

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Open post
Alex @stsquad@mastodon.org.uk
· 2mo ago
Replying to @beeoproblem@mastodon.gamedev.place
@beeoproblem@mastodon.gamedev.place It's almost like the models are incentivised to be verbose in their replies. @flxtr@social.tchncs.de @kjetil_kilhavn@snabelen.no @jwildeboer@social.wildeboer.net
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Open post
Alex @stsquad@mastodon.org.uk
· 3mo ago
Replying to @mousebot@todon.nl
@mousebot@todon.nl do you want to narrow down the headers view? I invariably just C-s in the headers view and hit return twice once I find it. Otherwise I tweak the scope of the current search. Message-ID's are very useful here.
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Open post
Alex @stsquad@mastodon.org.uk
· 4mo ago

Well I spread my votes between #norway, #bulgaria and #belgium for #eurovision tonight.

Mastodon.org.uk

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Open post
Alex @stsquad@mastodon.org.uk
· 6mo ago

Nice bit of #git #data driven #analysis https://pebblebed.com/blog/kernel-bugs-part2 #opensource

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Open post
Alex @stsquad@mastodon.org.uk
· 30mo ago
Replying to @AndresFreundTec@mastodon.social
@AndresFreundTec Excellent analysis and lucky it got spotted so early. The implications are rather terrifying though, it looks like a long game to subvert and compromise an upstream project. We can't assume this is the first or only attempt so far.
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Open post
Alex @stsquad@mastodon.org.uk
· 20mo ago
Replying to @nicholasr@mastos.online
@nicholasr@mastos.online @LinaroLtd@mastodon.social the container solutions are great for user-space (I use #waydroid to run #minecraft for example). However if you want to validate kernel architectural behaviour or interactions between VMs you have to emulate the whole system.
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Open post
Alex @stsquad@mastodon.org.uk
· 23mo ago
Replying to @peter_ellis@mastodon.social
@peter_ellis@mastodon.social @Averixus@toot.wales quite. In an ideal world no one would pay any fines because everyone had a valid ticket.
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Open post
Alex @stsquad@mastodon.org.uk
· 6mo ago
Replying to @popey@mastodon.social
@popey out of interest what display device did you give your riscv and s390x #qemu machines? Using virtio-gpu should offload a lot of processing from the slow emulation making for a reasonably snappy UI experience.
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Open post
Alex @stsquad@mastodon.org.uk
· 4mo ago

Some days the challenge isn't the code but the tools that build the code.... #buildsystem #hacking

Mastodon.org.uk

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Open post
Alex @stsquad@mastodon.org.uk
· 4mo ago

Today I'm experimenting to see if I can avoid learning #freecad and instead just #vibe in #openscad to add handles to a #gridfinity baseplate.

Mastodon.org.uk

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Open post
Alex @stsquad@mastodon.org.uk
· 20mo ago
Replying to @globalc@chaos.social
@globalc@chaos.social @LinaroLtd@mastodon.social there are some challenges with x86-on-Arm due to differing memory models. However projects like Fex-EMU and Box86 do well by taking advantage of M1's x86 memory mode and reducing the total amount of translation they do. It depends on what your use case is.
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Open post
Alex @stsquad@mastodon.org.uk
· 5mo ago
Replying to @paulf@mastodon.bsd.cafe
@paulf@mastodon.bsd.cafe @penguin42@mastodon.org.uk same for #qemu really - the majority of the code is boilerplate except where we run into our edge cases. For qemu these are a) 64 bit file cookies for 32 bit b) overly fancy memory mapping (multiple maps, gcs etc) and c) just good enough sandboxing of /proc. There are probably some ioctls that are hard to do for specific HW because you deal with much more complex structures.
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Open post
Alex @stsquad@mastodon.org.uk
· 5mo ago
Replying to @tmcfarlane@toot.community
@tmcfarlane@toot.community @robpike@hachyderm.io on top of that a limit check for transit transactions seems pretty trivial to add.
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