CONFIG_PPC_SUBPAGE_PROT: Support setting protections for 4k subpages (subpage_prot syscall)

General informations

The Linux kernel configuration item CONFIG_PPC_SUBPAGE_PROT has multiple definitions:

Support setting protections for 4k subpages (subpage_prot syscall) found in arch/powerpc/Kconfig

The configuration item CONFIG_PPC_SUBPAGE_PROT:

• prompt: Support setting protections for 4k subpages (subpage_prot syscall)
• type: bool
• depends on: CONFIG_PPC_64S_HASH_MMU && CONFIG_PPC_64K_PAGES
• defined in arch/powerpc/Kconfig
• found in Linux kernels: 5.9–5.19, 6.0–6.17, 6.18-rc+HEAD

Help text

This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page.

If unsure, say N here.

Support setting protections for 4k subpages found in arch/powerpc/Kconfig

The configuration item CONFIG_PPC_SUBPAGE_PROT:

• prompt: Support setting protections for 4k subpages
• type: bool
• depends on: CONFIG_PPC_BOOK3S_64 && CONFIG_PPC_64K_PAGES
• defined in arch/powerpc/Kconfig
• found in Linux kernels: 2.6.25–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.8

Help text

This option adds support for a system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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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