CONFIG_ETEXT_SHIFT: _etext shift

General informations

The Linux kernel configuration item CONFIG_ETEXT_SHIFT:

• prompt: _etext shift
• type: int
• depends on: ( CONFIG_ETEXT_SHIFT_BOOL ) && ( CONFIG_STRICT_KERNEL_RWX && CONFIG_PPC_BOOK3S_32 ) && ( CONFIG_STRICT_KERNEL_RWX && CONFIG_PPC_8xx )
• defined in arch/powerpc/Kconfig
• found in Linux kernels: 5.1–5.7

Help text

On Book3S 32 (603+), IBATs are used to map kernel text. Smaller is the alignment, greater is the number of necessary IBATs.

On 8xx, large pages (512kb or 8M) are used to map kernel linear memory. Aligning to 8M reduces TLB misses as only 8M pages are used in that case.

Hardware

LKDDb

Raw data from 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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