Similar to Linux 7.2 enabling Eswin SoC support by default in the RISC-V "defconfig" kernel build, UltraRISC RISC-V coverage is also now being enabled by default for RISC-V kernel builds in Linux 7.2.

Merged today ahead of the imminent Linux 7.2-rc3 weekly test release are the RISC-V fixes, which include adding the ARCH_ULTRARISC Kconfig support for enablign the UltraRISC RISC-V hardware support, which in the mainline kernel currently means the UR-DP1000 with eight UltraRISC C100 cores.

This UltraRISC RISC-V SoC support in turn is being enabled by default for the RISC-V defconfig. The ARCH_ULTRARISC is a late post-merge-window add but was already referenced by some drivers.

The support was merged a short time ago via this merge to Linux Git.