abarbarian Posted February 2 Share Posted February 2 (edited) Linux 6.2 Performance Option Helps Extend The Longevity Of Intel Skylake Era PCs Quote One of the new features introduced with Linux 6.2 is Call Depth Tracking and it can help extend the useful service life of Intel Skylake through Coffeelake era processors in providing better performance than is otherwise found out-of-the-box on Linux. Quote Call Depth Tracking was merged for Linux 6.2 and needs the "CALL_DEPTH_TRACKING" Kconfig build option enabled. Additionally, it's not used by default unless the "retbleed=stuff" option is passed to the kernel when booting the system. Arch linux has the "CALL_DEPTH_TRACKING" Kconfig build option enabled. It shows up on my pc " Retbleed:Mitigation; IBRS ". Put brain in gear before pressing enter11:16:29-->Thu Feb 02-->~ -->lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 39 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Vendor ID: GenuineIntel Model name: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz Vulnerabilities: Itlb multihit: KVM: Mitigation: VMX disabled L1tf: Mitigation; PTE Inversion; VMX conditional cache flushe s, SMT vulnerable Mds: Mitigation; Clear CPU buffers; SMT vulnerable Meltdown: Mitigation; PTI Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable Retbleed: Mitigation; IBRS Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Spectre v2: Mitigation; IBRS, IBPB conditional, RSB filling, PBRSB- eIBRS Not affected Am I correct in thinking that I can add " retbleed=stuff " to my boot loader like so ? Quote "Boot using default options" "root=PARTUUID=eb3de75a-01c4-4821-9de5-65d233f3154e retbleed=stuff rw initrd=intel-ucode.img initrd=initramfs-%v.img" More info on Retbleed Edited February 2 by abarbarian 1 Quote Link to comment Share on other sites More sharing options...
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