This documents a from-scratch install of Chimera Linux on a pseries
QEMU/KVM VM running on a POWER9 host, with a PReP boot partition and GRUB
(powerpc-ieee1275 target).
Verification status: the GRUB/PReP step (grub-install /dev/vda1) and
overall flow have been run for real and reported straightforward. Package
names and dinit-specific commands below are verified against Chimera's
actual repo and official docs, but the full sequence hasn't been run
This documents a from-scratch install of Arch POWER Linux distribution on a pseries QEMU/KVM
VM running on a POWER9 host, with a PReP boot partition and GRUB
(powerpc-ieee1275 target). It also captures every pitfall hit along the way —
each one cost real debugging time, so they're called out explicitly rather than
silently avoided.
Endianness note: this was run and verified end-to-end on powerpc64 (big-endian).
Arch POWER also publishes a powerpc64le (little-endian)
When a value is left live on the QVM opStack across a conditional branch and
the branch is taken, the compiled VM can return a wrong result. The bytecode
interpreter produces the correct value. Reproduces on current master
(fe57ee9) on all three JIT backends — x86_64 (vm_x86.c), aarch64
(vm_aarch64.c) and ppc64le (vm_powerpc.c) — deterministically, with a
13-instruction function: no data input, no syscalls, no undefined behaviour.
| # op-build (open-power) vs Raptor downstream — comparison | |
| Date: 2026-05-11 | |
| Our tree: `~/Work/op-build` on branch `bump-linux-6.12.87` / `amdgpu-navi23` (forks from open-power/op-build master @ `59464d53`) | |
| Raptor tree: `~/Work/op-build-blackbird` at tag `raptor-v2.10` (Feb 15, 2024) | |
| Raptor repo URLs: | |
| - `gitlab.raptorengineering.com/openpower-firmware/machine-talos-ii/op-build.git` (used by our local clone) | |
| - `gitlab.raptorengineering.com/openpower-firmware/machine-blackbird/op-build.git` (Blackbird-specific variant, shares most code) |
Google Native Client (NaCl) uses Software Fault Isolation (SFI) to sandbox untrusted native code. Each supported architecture has a unique SFI implementation. The closest existing analogy for ppc64le is the MIPS 32-bit port: both use fixed-length instructions, pure software isolation (no hardware segments), and dedicated mask registers.
NaCl currently supports: x86-32 (hardware segments), x86-64 (base register + zero-extension), ARM 32-bit (bic masking), and MIPS 32-bit (mask registers). No PPC support has ever existed.
GOG's Linux game installers (.sh files) are Makeself archives that bundle a
custom mojosetup binary (x86_64) to handle the installation UI and file
extraction. On non-x86 architectures like PPC64LE or RISCV, the bundled binary won't
run natively. This document describes how to compile mojosetup from source for
your architecture and use it to run any GOG .sh installer, with support for stdio,
ncurses (TUI), GTK2, GTK3, and GTK4 (graphical) interfaces.
test_vinsertd.c:
#include <stdio.h>
#include <stdint.h>
#include <altivec.h>
typedef union {
vector unsigned char v;
uint64_t u64[2];
uint32_t u32[4];This document covers the feasibility analysis and implementation plan for adding
SIMD acceleration to the Yamagi Quake II software renderer
(src/client/refresh/soft/).
Great choice! Monkey Island 1 (The Secret of Monkey Island) uses the SCUMM engine (v5) and has well-established tooling. The Talkie CD version adds voice acting, which you'd keep while translating text. Overview You'll need to:
| [tle@fedora ~/W/zig]$ git diff | |
| diff --git a/CMakeLists.txt b/CMakeLists.txt | |
| index 0ab8e1cddd..eb2f60dbf1 100644 | |
| --- a/CMakeLists.txt | |
| +++ b/CMakeLists.txt | |
| @@ -793,7 +793,7 @@ if(MSVC) | |
| else() | |
| set(ZIG_WASM2C_COMPILE_FLAGS "-std=c99 -O2") | |
| set(ZIG1_COMPILE_FLAGS "-std=c99 -Os") | |
| - set(ZIG2_COMPILE_FLAGS "-std=c99 -O0 -fno-sanitize=undefined -fno-stack-protector") |