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Created February 11, 2019 21:54
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powerparity.md

FreeBSD on Power9 (ppc64) Parity

  • NMI semantics: NMIs need to be emulated by only soft disabling interrupts, disabling interrupts blocks all interrupts except machine check exceptions and system resets.

  • Superpage support is stable and on by default in the POWER9BSD staging branch

  • NUMA support: Parse OFW and set up appropriate structures for memory to be allocated from the correct domain and interrupts to be bound to the correct socket.

  • LKPI support for POWER9, Drm-next supports radeonkms. Some additional big endian changes required for amdgpu.

  • Interrupt handling improvements resulting in up to a 10% reduction in buildkernel time.

    a) Cached XICS IPI vector

    b) Added XIVE exploitation mode driver

  • Rust support in review.

  • Successfully booted an LLVM compiled kernel.

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