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  • !32

refactor(mm): 地址空间布局重构 — stack高地址 + mmap向下增长

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Merged StellaOS requested to merge fix/kernel-page-fault-guard into main Jun 03, 2026
  • Overview 0
  • Commits 5
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  • Changes 117
  • from_elf() 不再负责栈放置,只返回 heap_bottom
  • 堆紧贴 ELF 段,栈位于 Sv39 用户空间顶部 (USER_STACK_TOP)
  • mmap 从 MMAP_BASE 向下分配,brk 从 heap_bottom 向上增长,背向而行
  • USER_STACK_SIZE: 8KB -> 128KB,预留 MAX_STACK (8MB) 供栈自动增长
  • dotcargo: 补充 byte-os/lose-net-stack vendor 源条目
  • vendor: 修复 lose-net-stack .cargo-checksum 缺失文件
  • Makefile: 恢复 --offline + bus=virtio-mmio-bus.0,user 构建加 toolchain 处理
  • rust-toolchain: 统一到 nightly-2025-02-18
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Source branch: fix/kernel-page-fault-guard