sweetjuly

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301.
by sweetjuly 4y ago
This was my experience as well. I could've gone my entire CS education without even needing to think about state machines outside of a short discussion in a formal methods class and regex, but taking a digital logic class really opened
302.
by sweetjuly 4y ago
I wonder how hardware even handles splitlocking. Do they lock the bus when the fetched prefix matches any of the other prefixed of an atomic instruction? Does this mean you can have benign, possibly even pure ALU, instructions that can trig
303.
by sweetjuly 4y ago
"Hey mom, the rent board approved an 8.8% rent increase. Please sign this document acknowledging the new rate or indicate that you will vacate within 90 days. Thanks, love you!"
304.
by sweetjuly 4y ago
Ugh, I suppose you're right. They do seem to skip the beta pipeline for ITWs. I wonder if this has changed now that they're leaning on "rapid security response" patches for critical vulnerabilities, which betas do get, a
305.
by sweetjuly 4y ago
I run the latest betas of macOS and iOS which means I get exploit breaking changes as soon as possible. I keep all the security mitigations on my mac enabled (SIP, secure boot, etc.) which helps makes a variety of exploit flows and persiste
306.
by sweetjuly 4y ago
Could you expand on this? How would I securely communicate from a device that, say, has a kernel level implant? This is one of those cases where SGX/TrustZone would be immensely helpful but nobody has built a messenger that actually so
307.
by sweetjuly 4y ago
I wonder what the BMC was doing to hurt performance. Maybe it was questionable DVFS that stopped when the BMC died? Poor fan management that caused thermal throttling?
308.
by sweetjuly 4y ago
Careful, you're coming dangerously close to reinventing SystemVerilog's formal verification support :) SV formal is tough at first but wonderful once you really get it because it lets you lay out your constraints and preconditions
309.
by sweetjuly 4y ago
I would love to read the rants if you can find them. I was really considering getting some RK3588 based boards since it seems to be the most powerful ARM based SoC you can actually buy.
310.
by sweetjuly 4y ago
I'm curious what your use case is for such a specific combo of sensors. Most of these devices are meant for use on standard consumer laptops (as in most other situations a regular mini microcontroller dev board is more than suitable),
311.
by sweetjuly 4y ago
It's tragic but it seems like anyone who regularly does any wilderness activities/adventure sports knows one or many people who have died doing it. I know some that have drowned, others that fallen due to badly placed cams. It&#x2
312.
by sweetjuly 4y ago
Yes, but that's not the only thing running under the VM--the entire user client is in there. This is not proof that they're evil, in fact it's identical to an anti-boting technique that was just on the front page yesterday [1
313.
by sweetjuly 4y ago
I think one of the big unstated challenges (but implied by the reference to needing a bootloader exploit) is that KTRR/CTRR [1] prevents new executable kernel code from being introduced after the device boots, even if the kernel is ful
314.
by sweetjuly 4y ago
I feel that this is a common understanding of RISC but not a particularly useful one because not all complexity is equal. Things like matrix extensions are "complicated" from a perspective of "there are a lot of instructions
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by sweetjuly 4y ago
All they'll get is a strong ID on your exit node. That node is, of course, shared by a ton of people and so trying to pick apart the traffic is going to be very difficult
316.
by sweetjuly 4y ago
What is the recommended way under Linux then? It seemed like everyone was going full steam ahead with adding devices under /dev and /proc with control via read/write/ioctl. ioctl in my experience has been the best way
317.
by sweetjuly 4y ago
This was more of a "yes, and" comment. The social instinct that is drilled into (most) everyone to not interrupt that this article mentions makes interrupting someone that is dominating the conversation way harder.
318.
by sweetjuly 4y ago
One conversational skill that's always been so tough for me is interrupting. When you're in charge of a meeting, you are also responsible for giving everyone an opportunity to respond should they have something to offer. Unfortu
319.
by sweetjuly 4y ago
I'm very much a centralized person and I've been loving Zotero. It's great for taking notes and categorizing content from a wide variety of sources. It's primarily meant for research and so if you write papers you'l
320.
by sweetjuly 4y ago
Yup! These sorts of crosses are used to align photolithography masks. Here's a similar example: https://www.seas.upenn.edu/~nanosop/images/alignmentmarks2.p... There are a lot of other structures used to char
321.
by sweetjuly 4y ago
I really like this one Defcon talk on chip decapping [1]. It's a pretty nasty process but absolutely one you can do on your driveway (poor man's fume hood, don't tell the EPA) at home. You can then just use a standard front l
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by sweetjuly 4y ago
My (least) favorite instance of this is in the response to the Log4j vulnerability. Evidently some companies tasked people with ensuring that ""all of their suppliers"" had patched the issue and were in compliance. This
323.
by sweetjuly 4y ago
I mean, not really. All branches will need to hit the backend in order to verify that they were correctly predicted. RISC-V conditional branches, for example, require doing register register comparisons for verification which means they mus
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by sweetjuly 4y ago
>We also didn’t talk at all about how different workloads affect different branch predictors. Predictor performance varies not only based on table size but also based on which particular program is run. One of my favorite little tradeoff
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by sweetjuly 4y ago
Totally agreed. My parents were always weirdly mean about my friends and often, their appearances. All it ever achieved was discouraging me from telling them anything at all about my friends and never bringing them around the house because
326.
by sweetjuly 4y ago
Can a statement made by [chr(random()&0xFF) for i in range(100)] be defamatory? With low probability, it may make sentences that appear as statements of fact but, as the article mentions, anyone familiar with the "speaker