CONFIG_HWZOL: hardware zero overhead loop support

General informations

The Linux kernel configuration item CONFIG_HWZOL:

• prompt: hardware zero overhead loop support
• type: bool
• depends on: CONFIG_CPU_D10 || CONFIG_CPU_D15
• defined in arch/nds32/Kconfig.cpu
• found in Linux kernels: 4.17–4.20, 5.0–5.17, 5.17+HEAD

Help text

A set of Zero-Overhead Loop mechanism is provided to reduce the instruction fetch and execution overhead of loop-control instructions. It will save 3 registers($LB, $LC, $LE) for context saving if say Y. You don't need to save these registers if you can make sure your user program doesn't use these registers.

If unsure, say N.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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