Today somebody told me that my talk at #39C3 and #WHY2025 has been written about in a *paper* magazine! Three full sized pages! I bought a physical copy at Bruna at the #Amsterdam Centraal train station today.
Did not know that this was going to be published, so this is quite a fun but also a strange surprise!
(@bruna: btw why is this in the category "men"? computers are for everybody),
There's some fire in #OpenBSD's commit message to address Intel's #L1TF screwup
"""(3) stuffing the L1D cache with fresh data and expiring old content. This stuffing loop is complicated and interesting, no details on the mitigation have been released by Intel so Mike and I studied other systems for inspiration. Replacement algorithm for the L1D is described in the tlbleed paper."""
L1TF – L1 Terminal Fault Attack, la última vulnerabilidad en los procesadores Intel
So I'm waiting until Intel's 9th Gen announcement to build my new PC, but things like #L1TF/#Foreshadow strongly make me consider #AMD... well, those and the fact that I can get 16 cores for $899.
That being said, #Intel said they patched this one with 0 performance hit so I guess it shouldn't be that much of a dealbreaker. Choices, choices...
RT @[email protected] Theo de Raadt on the impact of the Intel #Foreshadow #L1TF on #OpenBSD. “We asked repeatedly, but Intel provided no advance notice. We did not even receive replies to our requests for dialogue. On a side note, AMD cpus are not vulnerable to this problem.”
So, #L1TF is kinda the "hyperthreading is dead" one... VMware introduces a new "ESXi Side-Channel-Aware Scheduler".
Quote: "Currently, this scheduler provides the Hyper-Threading-aware mitigation by scheduling on only one Hyper-Thread of a Hyper-Thread-enabled core. As described in more detail below, careful capacity planning is required prior to enabling the ESXi Side-Channel-Aware Scheduler as it could have a performance impact for enterprise applications."
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