[$] Creating a healthy kernel subsystem community

Creating welcoming communities within open-source projects is a recurring topic at conferences; those projects rely on contributions from others, so making them welcome is importan [...]

https://lwn.net/Articles/1036908/ #LWN

Well, I just got laid off from my job. If anyone needs a talented embedded systems engineer or hardware engineer with strong experience in video hardware, send me a message with details of a job opening and I can provide a CV. Remote work preferred, but I can work anywhere in central Minnesota. Boosts welcome and encouraged.

Apple M1

My first die shots. You can see a lot more than I'd imagined without a microscope. This is a 1:1 macro lens, and just changing the angle/size of the light source gives you a ton of control.

(My photographs, die prepared by "IT AI IC Cyber Style Store"/foreverfire2005 on ebay)

2005: Your website looks like it was designed by a 3-year-old and barely works, this can't be a trustworthy source of information

2025: Your website looks like it was designed by a 3-year-old and barely works, this is the last bastion of truth on the Internet

stack overflow can be eerily accurate sometimes: https://stackoverflow.com/questions/49165339/excel-does-there-exist-a-geometric-mean-if-type-manipulation-in-excel

Weekly GCC update:

Optimization improvements:
* Copy prop for aggregates improvements; now into args
* Recongize integer zero as zeroing for memset into aggregate copy or memcpy
* Improve VN support over aggregates copies
* Recongize saturation multiple more
* Allow for more mergeable constants to be placed in the mergeable section

C++ improvements/changes:
* Implement C++20 (Defect report) P1766R1: Mitigating minor modules maladies
* Fix parsing of non-comma variadic methods with default args
* Warn on #undef/#define cpp.predefined macros
* Implement C++26 P1306R5 - Expansion statements
* Implement P2036R3 - Change scope of lambda trailing-return-type
* Finish up P2115R0 implementation (unnamed unscoped enums)

Target changes:
* epiphany and rl78 are marked as obsolete targets
* LoongArch: 128bit atomics support
* LoongArch: _BitInt support
* x86: Add target("80387") function attribute
* RISCV: Add MIPS prefetch extensions
* aarch64: Fix CMPBR extension

@vegard I see patch sets that big and don't see people yelling about it. That said, it can get really tricky if the patch sets aim at different trees because then nobody really knows who's supposed to review/merge them and the whole set can sort of just hang around in limbo. That's less about the number of patches, though, and more about the complexity of doing cross-tree patch sets.

The more I hear about RISC-V the more it it sounds like XMPP but in even worse because you can't just patch your client. Vendors implement, it doesn't match the spec, "proprietary performance extensions" and you can recompile for every different CPU because of that

Summary of last week's changes in GCC:
* Many GCCrust changes were merged in (200+)
* Improvements to diagnostics infastructure
** supporting nesting levels
* _BitInt support for s390
** changes needed to support for loongarch too
* Update versions of MPC, MPFR and GMP in contrib/download_prerequisites
* Improvments to the VN for reading past an aggregate copy
* copy prop of aggregates improvements
* Improve handling of musttail calls in C++ with -fsanitize=address and -O0
* Fix/Improve constants that are mergeable; supports non power of 2 in some cases
* Implement C++26 P1061R10 - Structured Bindings can introduce a Pack

@colincornaby when I moved into my first apartment after college my friends' parents' gave me a microwave they'd been given as a wedding present. It had a "turkey" button on it.

I tried it once and it boiled the coating off my ceramic plates.

@vitaut @oleksandr IIUC that's the second case, so it can be UB. I was looking at a C11 draft, seems to the same in the C23 draft. As @shafik points out, it's explicitly defined to be 0 by the C++23 draft.

@deviantollam I just got my first Mac two months ago (as my work computer). IIUC this is how they work, there's some workarounds that sort of try to deal with the issue but they don't appear to work that well.

The software on these things is just terrible.

@oleksandr @vitaut IIUC it's UB (depending on how the implemented handles some related constructs)

If you're talking about `NULL - NULL` The C standard allows NULL to be either an integer (in which case subtraction is well defined) or a void pointer (in which case arithmetic is UB).

If you're talking about something like this code snippint, then you hit the "a pointer to an object that is not an element of an array behaves the same as a pointer to the first element of an array of length one with the type of the object as its element type". It's just "an array", so if they're the same array then it's defined. If they're different then it's UB (as pointer subtraction is only defined for two pointers to the same array).

Meet our awesome mascot in the colors of the 2025 edition!
Bringing that unmistakable French touch to the conference.:)

Feel free to download and use them – and keep an eye out, you might just spot them on some slides this September!

https://kernel-recipes.org/en/2025/meet-our-mascot/

Remember when RFK Jr said he wanted to make lists of autistic people?

Disabled advocates warned that was just the beginning. That the violation of medical privacy would be used for nefarious purposes.

Today the regime announced it’s giving all personally identifiable information of Medicaid enrolees to ICE.

That’s right, ICE bullies will now have access to almost 80 million people’s personal info. This is an atrocious violation of privacy that will no doubt be used to target other groups as well.

It won’t stop with immigrants. It won’t stop with autistic people.

Fascists never stop and we must all fight back.

#uspol #fascism #immigration #medicaid #ableism #disability

So that's one of those wacky "two A plug" USB cables?

You know, I remember times where I would concede proprietary software was *better* than #floss (due to features, support or however you want to define it).

Thanks to all the AI crap, micro-optimizations, tracking and privacy/security violations and useless changes I actually think most #floss apps are much better than their proprietary alternatives now. I don't have to keep clicking "maybe later" over and over. That's worth a lot to me OK?

That talk is incredible. If you're into hardware in general, you should watch it.

RE//verse 2025: Full-stack Reverse Engineering of the Original Microsoft...
https://youtube.com/watch?v=hGlIkgmhZvc

🖥 This is big: Android's Linux Terminal is available on the Galaxy Z Flip 7!

You can run full Linux apps in a VM. And with DeX, on an external display!

It's the first non-Pixel device to support it. Curiously, the Z Fold 7 doesn't have it. With the Linux Terminal + Samsung DeX...the Z Flip 7 might even be a better portable PC than the Z Fold 7? At least when it's docked!

Details👇

🔗 https://www.androidauthority.com/galaxy-z-flip-7-linux-terminal-3578675/