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1. Virtual Address Translation
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1. Virtual Address Translation
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1.1 Hierarchical 4-level per address space page tables
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1.1 Hierarchical 4-level per address space page tables
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SPARTAN kernel deploys generic interface for 4-level page tables
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SPARTAN kernel deploys generic interface for 4-level page tables for these
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for these architectures: amd64, ia32, mips32 and ppc32. In this
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architectures: amd64, arm32, ia32, mips32 and ppc32. In this setting, page
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setting, page tables are hierarchical and are not shared by
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tables are hierarchical and are not shared by address spaces (i.e. one set of
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address spaces (i.e. one set of page tables per address space).
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page tables per address space).
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 VADDR
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 VADDR
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 +-----------------------------------------------------------------------------+
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 +-----------------------------------------------------------------------------+
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 |   PTL0_INDEX  |   PTL1_INDEX   |   PTL2_INDEX   |   PTL3_INDEX   |   OFFSET |
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 |   PTL0_INDEX  |   PTL1_INDEX   |   PTL2_INDEX   |   PTL3_INDEX   |   OFFSET |