Changelog

Versions are the kext's CFBundleVersion. "Booted" means the version ran on the test laptop (Legion 5 15IAX10, Arrow Lake iGPU 8086:7D67); "built" means it compiled and has not been run. Only the v0.0.27 prerelease has a published binary.

• xegfx.gtawake=1 holds every GT's wakeref, =2 also takes forcewake on all domains, so the GT never enters RC6. Off by default. It mirrors what stopped the whole-Mac freezes on another Xe port (I-116). The implementation of xg_i915_gtawake is in the NvGfx fork's gpu/xkpi overlay.
• XeGfxGt in the registry reports gtawake-gts.

• xegfx.irqoff_check=0 turns off the interrupts-off checker and its 20 ms wakeup, to A/B it against the I-116 freeze. The checker stays on by default.

• The interrupts-off watchdog names the CPU and the caller before macOS hits its rendezvous timeout (I-116). On N-290 the Intel desktop stayed up for the 900 s test, the first run to do so since I-116 appeared.

• Reverts the blanket rwlock spin from 0.0.40, which caused rendezvous panics (N-287, N-288).
• xg_map_mmap takes the lookup lock before rcu_read_lock instead, which fixes the sleeping-lock-in-RCU panic on WindowServer's mmap path.

• Interrupt and handler counts in debug.xegfx_spin, for the N-287 stall.
• XeGfxIntelFB 0.5 names the iGPU so About This Mac shows "Intel Xe Graphics".

• rwlocks spin inside critical sections, after WindowServer's mmap-offset lookup blocked under rcu_read_lock and panicked (N-286). Reverted in 0.0.42.

• Logs why a userptr hold fails (WindowServer execbuffer EFAULT, N-283).
• XeGfxIntelFB 0.3 clears the guard with a zero count.

See the git history. 0.0.38 rebases syncobj wait deadlines from Darwin's CLOCK_MONOTONIC onto the shim's ktime; 0.0.37 returns ETIME for LinuxKPI's ETIMEDOUT so Mesa sees VK_TIMEOUT.