Pinboard (jm)
https://pinboard.in/u:jm/public/
recent bookmarks from jmThe Semiconductor Heist Of The Century2021-08-30T09:20:55+00:00
https://semianalysis.substack.com/p/the-semiconductor-heist-of-the-century
jmArm China, 安谋科技, is asserting their independence. It is the most publicized instance of a joint venture in China going rogue, but also the most dangerous one. Over the decades IP has been taken and replicated in China, but this may be the most brazen attempt yet.
Arm has been shaken to its core with the 2nd largest market snatched from underneath it. While they are the largest individual owner in this firm, they have no control or power over it. 安谋科技 has set out on its own path and begun to develop its own IP. The base of Arm’s old IP is not the end of their line. There are many questions swirling about what this means for a potential Nvidia takeover or IPO, but it is clear that SoftBank’s short sighted profit driven behavior has caused a massive conundrum.
(via John Looney)]]>arm business china cpus hardware ip joint-ventureshttps://pinboard.in/https://pinboard.in/u:jm/b:ae27c071f500/<Now Go Bang!> 6502 “Illegal” Opcodes Demystified2021-07-05T09:43:45+00:00
https://www.masswerk.at/nowgobang/2021/6502-illegal-opcodes
jm6502 6510 history cpus via:craig opcodes microcodehttps://pinboard.in/https://pinboard.in/u:jm/b:2db7b0dd6ca2/‘It Can’t Be True.’ Inside the Semiconductor Industry’s Meltdown2018-01-14T22:44:39+00:00
https://www.bloomberg.com/technology
jm“Our first priority has been to have a complete mitigation in place,” said Intel’s Parker. “We’ve delivered a solution.” Some in the cybersecurity community aren’t so sure. Kocher, who helped discover Spectre, thinks this is just the beginning of the industry’s woes. Now that new ways to exploit chips have been exposed, there’ll be more variations and more flaws that will require more patches and mitigation.
"This is just like peeling the lid off the can of worms," he said.
]]>meltdown spectre speculative-execution security exploits intel amd cpushttps://pinboard.in/https://pinboard.in/u:jm/b:c82c3dde8c15/Notes from the Intelpocalypse [LWN.net]2018-01-04T13:56:16+00:00
https://lwn.net/SubscriberLink/742702/faaca06ffb59e902/
jmWhat emerges is a picture of unintended processor functionality that can be exploited to leak arbitrary information from the kernel, and perhaps from other guests in a virtualized setting. If these vulnerabilities are already known to some attackers, they could have been using them to attack cloud providers for some time now. It seems fair to say that this is one of the most severe vulnerabilities to surface in some time.
The fact that it is based in hardware makes things significantly worse. We will all be paying the performance penalties associated with working around these problems for the indefinite future. For the owners of vast numbers of systems that cannot be updated, the consequences will be worse: they will remain vulnerable to a set of vulnerabilities with known exploits. This is not a happy time for the computing industry.
]]>hardware cpus intel amd spectre meltdown securityhttps://pinboard.in/https://pinboard.in/u:jm/b:1763d3a58af0/The mysterious case of the Linux Page Table Isolation patches | Hacker News2018-01-03T12:55:01+00:00
https://news.ycombinator.com/item?id=16046636
jmlpt linux vm intel cpus securityhttps://pinboard.in/https://pinboard.in/u:jm/b:97ed5d019c23/Everything You Always Wanted to Know About Synchronization but Were Afraid to Ask2013-10-21T16:32:15+00:00
http://sigops.org/sosp/sosp13/papers/p33-david.pdf
jmsynchronization scalability cpus hardware papers via:fanf multicore cashttps://pinboard.in/https://pinboard.in/u:jm/b:f3c2f37df2b0/