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CONFIG_RISCV_ISA_SVNAPOT: Svnapot extension support for supervisor mode NAPOT pages

General informations

The Linux kernel configuration item CONFIG_RISCV_ISA_SVNAPOT:

Help text

Allow kernel to detect the Svnapot ISA-extension dynamically at boot time and enable its usage.

The Svnapot extension is used to mark contiguous PTEs as a range of contiguous virtual-to-physical translations for a naturally aligned power-of-2 (NAPOT) granularity larger than the base 4KB page size. When HUGETLBFS is also selected this option unconditionally allocates some memory for each NAPOT page size supported by the kernel. When optimizing for low memory consumption and for platforms without the Svnapot extension, it may be better to say N here.

If you don't know what to do here, say Y.



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