Principal Engineer at Amazon. QEMU enthusiast. Enjoys working on KVM/Virtualization, Emulation, RE, Booting, Security, s390x, PowerPC, ARM. @agraf@fosstodon.org
Joined November 2018
- Tweets 629
- Following 148
- Followers 1,873
- Likes 1,162
17 Photos and videos
auth bypass confirmed!
> INFO:paramiko.transport:Authentication (password) successful!
mm_keyallowed_backdoor cmd 1 allows to override the response for mm_answer_authpassword with a custom one. if you set it to { u32(9), u8(13), u32(1), u32(0) } you can login with any pass 🤓
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Alexander Graf - @agraf@fosstodon.org retweeted
31 Dec 2022
Listen up, Silicon Valley…
“Hardcore Engineer”
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Alexander Graf - @agraf@fosstodon.org retweeted
28 Apr 2023
Amazon EC2 now supports AMD SEV-SNP
Amazon EC2 now supports AMD Secure Encrypted Virtualization-Secure Nested Paging (AMD SEV-SNP), a feature on AMD EPYC™ processors, on M6a, C6a, and R6a instance types. The availability of AMD SEV-SNP in EC2 furth... aws.amazon.com/about-aws/wha…
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Alexander Graf - @agraf@fosstodon.org retweeted
26 Apr 2023
Spot on by @joshuaseattle. Out of AWS, GCP and Azure, only AWS guarantees that their zones are 3 (or more) physically separate DCs. Turns out for Google, even a region isn’t physically separate!
On paper both GCP and Azure have more zones & regions than AWS: but in practice…
26 Apr 2023
TLDR: Both Google and Microsoft don't guarantee that all zones are physically separate buildings or separated by at least <x> km/miles. Many of their "zones" in smaller regions are just separate buildings by the same DC facility
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Alexander Graf - @agraf@fosstodon.org retweeted
13 Apr 2023
A process is a purposeful bottleneck.
It directly limits ownership by moving decision-making from the individual, to the organization. It limits the ownership and actions of great hires, and limits the downside of poor hires.
scarletink.com/creating-proc…
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Alexander Graf - @agraf@fosstodon.org retweeted
10 Apr 2023
If you're a software engineer, your main job is maintaining legacy code.
Why? Because building a system doesn't take long, in comparison to how long code will last, assuming the code/business are successful.
Here are the 10 commandments of maintaining legacy code.
🧵
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Amazon Linux 2023 released lwn.net/Articles/926332/ #LWN
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Alexander Graf - @agraf@fosstodon.org retweeted
The #cfp for #kvmforum has gone out. This is a conference where you will find a lot of #qemu hackers: qemu.org/2023/03/08/kvm-foru…
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Alexander Graf - @agraf@fosstodon.org retweeted
4 Mar 2023
Wheee. QEMU 8.0 will support hosting Xen guests, but under Linux/KVM instead of actual Xen.
qemu-project.gitlab.io/qemu/…
We've already used it to find and fix guest kernel regressions that would otherwise have needed a full Xen setup to test and reproduce.
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I genuinely can't even hear the difference 😅. Both pronounciations sound 100% identical to me.
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We recently found a vulnerability affecting Hyundai and Genesis vehicles where we could remotely control the locks, engine, horn, headlights, and trunk of vehicles made after 2012.
To explain how it worked and how we found it, we have @_specters_ as our mock car thief:
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Same offer here: I have an extra bed in the Hilton Garden Inn Dublin from 11th until 15th that I'm happy to share with anyone who didn't manage to snatch one yet 😀. Please DM me if you're interested.
And if someone now suddenly needs a hotel bed in Dublin for @linuxplumbers or has one to offer, see the "Hotel room sharing" page (editable by anyone with an account) lpc.events/event/16/contribu…
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I can seriously hear it - my brain just tunes it in 🤯
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21 Jun 2022
I'll be at #ew22 @embedded_world tomorrow (Wednesday). Please DM me or reply here if you're around as well and interested to meet 😎
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Achievement unlocked: My name is up on stage @KernelRecipes #kr2022 🥳. Super happy to see the UEFI U-Boot work enabling "Just Works" style ARM SBCs 😁
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31 May 2022
Who would have thought you need to press Shift-; to get a . on AZERTY - and M is not next to N! 😆
31 May 2022
Many thanks to @_AlexGraf who did the show while we were facing technical problem. As a side note, Mac is not friendly with video projector
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30 May 2022
I've read about how jammed everything is in Paris, but experiencing it myself if quite something. Almost like the highways are made of goo 😅
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27 Feb 2022
Russian soldiers make ~6k€ per year. Ukraine gets 500M€ from the EU for this war. Can't UA just send push messages to every Russian phone logged into UA mobile networks saying "We give you 10k€ and a new passport if you desert. Reply to this number for instructions"?
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