Open-source News

Security Researchers Find Current RISC-V CPU Implementations Coming Up Short

Phoronix - Tue, 02/03/2026 - 01:19
While many open-source enthusiasts like to flaunt RISC-V as not having the security challenges as x86_64 CPUs have seen over the past several years with various speculative execution / side-channel attacks and arguing for the benefits of an open-source ISA in stronger security, in practice it's not so clear-cut. Security researchers at Germany's CISPA Helmholtz Center for Information Security have found current RISC-V CPU implementations coming up short for their actual security...

Loongson 3B6000 Benchmarks: How China's LoongArch CPU Compares To AMD Zen 5, Intel Arrow Lake & Raspberry Pi 5

Phoronix - Mon, 02/02/2026 - 22:48
Recently I finally got my hands on a LoongArch processor, the ISA developed by China's Loongson Technology as an evolution from their earlier use of the MIPS64 ISA and inspired by RISC-V and other modern ISAs. The Loongson-3B6000 features 12 cores / 24 threads with dual channel DDR4 ECC memory support. Here is a look at how that latest-generation LoongArch desktop processor compares to the current generation AMD Zen 5 and Intel Arrow Lake desktop processors under Linux. Plus also tossing in the Raspberry Pi 5 (Raspberry Pi 500+) for an ARM reference point.

Experimental Linux Code For 1GB PUD-Level THPs Shows 34% Faster Memory Access Times

Phoronix - Mon, 02/02/2026 - 21:51
Early, experimental code for implementing 1GB PUD-level THPs in the Linux kernel are showing positive benchmark results but other upstream stakeholders were surprised by this patch series appearing and it looking like it could be a while until if/when the patches are mainlined for helping to reduce translaction lookaside buffer (TLB) pressure without resorting to Hugetlbfs...

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