The kernel now links at 0xFFFF_FFFF_8000_0000 (code_model .kernel) and
loads low via the linker script's AT() clauses (.text at 1 MiB). A new
asm _start installs a 64 KiB kernel-owned .bss stack — the loader stack
is a low address that goes away with the identity map — and calls the
Zig entry, which reaches boot_info through the physmap. The user-pf test
blob reads the LAPIC through the physmap window (still present|user, ec
0x5). The low identity map still coexists in the kernel's tables as the
safety net. Suite 27/27.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Daniel SamsonandClaude Fable 5
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