The HMS Dragon row: why has it taken so long to get a UK destroyer to Cyprus?

· · 来源:dev新闻网

Заявления Трампа об ударе по иранской школе опровергли14:48

The root cause turns out explicitly to be because MMUs are so valuable: without one, you can’t run Linux, BSD, or Mach. Thus, when ARM split their IP portfolio into the A, R, and M-series cores, the low-cost M-series cores were forbidden from having an MMU to prevent price erosion of their high-end A-series cores. Instead, a proprietary hack known as the “MPU” was introduced that gives some memory security, but without an easy path to benefits such as swap memory and address space relocation.

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关于作者

马琳,资深行业分析师,长期关注行业前沿动态,擅长深度报道与趋势研判。

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