OpenBSD 7.4 features a wide variety of improvements from new kernel features to improved hardware support, security updates, AMD Zenbleed handling updates, and much more. Below is a look at some of the key highlights for this big OpenBSD 7.4 update.
- Dynamic Tracer (DT) and Utrace support on AMD64 and i386 OpenBSD.
- Power savings for those running OpenBSD 7.4 on Apple Silicon M1/M2 CPUs by allowing deep idle states when available for the idle loop and suspend.
- Support for the PCIe controller found on Apple M2 Pro/Max SoCs.
- Allow updating AMD CPU Microcode updating when a newer patch is available.
- A workaround for the AMD Zenbleed CPU bug.
- Various SMP improvements.
- Updating the Direct Rendering Manager (DRM) graphics driver support against the upstream Linux 6.1.55 state.
- New drivers for supporting various Qualcomm SoC features.
- Support for soft RAID disks was improved for the OpenBSD installer.
- Enabling of Indirect Branch Tracking (IBT) on x86_64 and Branch Target Identifier (BTI) on ARM64 for capable processors.
Downloads and more details on the hundreds of changes with OpenBSD 7.4 via OpenBSD.org .