CONFIG_RISCV_ISA_ZAWRS: Zawrs extension support for more efficient busy waiting

General informations

The Linux kernel configuration item CONFIG_RISCV_ISA_ZAWRS:

• prompt: Zawrs extension support for more efficient busy waiting
• type: bool
• depends on: CONFIG_RISCV_ALTERNATIVE
• defined in arch/riscv/Kconfig
• found in Linux kernels: 6.11–6.12, 6.13-rc+HEAD

Help text

The Zawrs extension defines instructions to be used in polling loops which allow a hart to enter a low-power state or to trap to the hypervisor while waiting on a store to a memory location. Enable the use of these instructions in the kernel when the Zawrs extension is detected at boot.

Hardware

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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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