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The Linux 7.2 kernel merge window has brought a substantial wave of system-on-chip updates, with nearly 1,000 patches integrated on the SoC side — and Apple M3 grabs the headlines as one of five newly enabled platforms to receive mainline kernel support.
According to Phoronix, the incoming patches represent a broad effort spanning multiple chip vendors and hardware families. Among the most significant additions is official mainline support for Apple's M3 processor — a major milestone in the long-running, multi-year effort to bring Apple Silicon into the mainline kernel.
Why Mainline Support Matters
Mainline support means that a piece of hardware can boot and run a standard upstream Linux kernel without relying on out-of-tree patches or vendor-specific forks. For Apple Silicon, this distinction is particularly meaningful. When Apple transitioned its Mac lineup to custom ARM-based processors starting with the M1 in 2020, the chips shipped with no official Linux support whatsoever. The community-driven Asahi Linux project stepped in to reverse-engineer the hardware and develop the necessary drivers, gradually upstreaming their work into the mainline kernel over the following years.
The addition of the M3 — Apple's third-generation Apple Silicon chip, released in late 2023 — continues that trajectory. While Linux users have been able to run on M3 hardware through Asahi's patched kernels for some time, having the support baked into mainline simplifies the process considerably, reducing maintenance burden and broadening accessibility.
Broader SoC Enablement
The M3 is not the only beneficiary of this merge window. In total, five new SoCs have been enabled to work with mainline Linux in 7.2. The sheer volume of patches — close to 1,000 — underscores the pace at which the kernel community is working to expand hardware coverage across the ARM ecosystem and beyond.
SoC enablement is one of the less glamorous but critically important areas of Linux kernel development. Each new chip family typically requires board device tree files, clock and power domain drivers, pin control configurations, and platform-specific fixes. Getting all of these elements merged upstream is a labor-intensive process that often involves months of review and revision.
What It Means for the Ecosystem
For IT professionals and developers working with Apple hardware, mainline M3 support reduces friction when deploying or testing Linux environments on recent Macs. It also signals to the broader industry that the kernel development process is capable of keeping pace with rapid hardware iteration, even when manufacturers do not provide official Linux support.
The updates in Linux 7.2 further reinforce the importance of community-led hardware enablement projects like Asahi Linux, which continue to serve as a bridge between proprietary silicon designs and the open-source operating system. As Apple prepares future iterations of its processor lineup, each successful upstreaming effort lays groundwork that makes subsequent generations easier to support.
The Linux 7.2 merge window remains ongoing, and additional changes are expected before the final release.
Linux 7.2 核心合併窗口帶來了大規模的晶片系統更新，SoC 方面整合了近 1,000 個修補程式——而 Apple M3 作為五個新獲得主流核心支援的平台之一，成為了頭條新聞。
根據 Phoronix 的報導，這些引入的修補程式代表了一項跨越多個晶片供應商和硬體系列的廣泛努力。其中最重要的新增內容是 Apple M3 處理器獲得官方主流支援——這是將 Apple Silicon 引入主流核心這一持續多年的努力中的一個重要里程碑。
為何主流支援如此重要
主流支援意味著一個硬體元件可以無需依賴樹外修補程式或供應商特定的分支版本，即可啟動並運行標準的上游 Linux 核心。對於 Apple Silicon 來說，這一區別尤為重要。當 Apple 從 2020 年的 M1 開始，將其 Mac 產品線過渡到自訂的 ARM 架構處理器時，這些晶片最初完全沒有官方 Linux 支援。社區驅動的 Asahi Linux 項目介入，對硬體進行逆向工程並開發必要的驅動程式，在隨後的幾年中逐步將他們的工作上游整合到主流核心中。
第三代 Apple Silicon 晶片 M3 於 2023 年末發佈，其加入延續了這一趨勢。儘管 Linux 用戶一段時間以來已可通過 Asahi 的修補核心在 M3 硬體上運行系統，但將支援內建於主流核心中極大地簡化了流程，減輕了維護負擔並擴大了可及性。
更廣泛的 SoC 啟用
M3 並非本次合併窗口的唯一受益者。總共有五款新的 SoC 在 7.2 版本中獲得了與主流 Linux 配合工作的能力。修補程式的龐大數量——接近 1,000 個——突顯了核心社群在擴展 ARM 生態系統及其他領域硬體覆蓋方面的工作節奏。
SoC 啟用是 Linux 核心開發中一個較不顯眼但至關重要的領域。每個新的晶片系列通常都需要板級設備樹文件、時鐘與電源域驅動程式、引腳控制配置以及平台特定的修復。將所有這些元素合併上游是一個勞動密集型的過程，通常需要數月的審查和修訂。
對生態系統的意義
對於使用 Apple 硬體的 IT 專業人士和開發人員來說，M3 的主流支援降低了在近期 Mac 上部署或測試 Linux 環境的摩擦。這也向更廣泛的行業發出信號，表明即使製造商不提供官方 Linux 支援，核心開發過程也能夠跟上硬體快速迭代的步伐。
Linux 7.2 中的更新進一步強化了像 Asahi Linux 這樣社區主導的硬體啟用項目的重要性，它們繼續充當專有晶片設計與開源作業系統之間的橋樑。隨著 Apple 準備其處理器產品線的未來迭代，每一次成功的上游整合都為後續世代更易於支援奠定了基礎。
Linux 7.2 合併窗口仍在進行中，預計在最終發佈前還會有更多變更。