CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS:

General informations

The Linux kernel configuration item CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS:

• prompt:
• type: bool
• depends on: (none)
• defined in arch/Kconfig
• found in Linux kernels: 2.6.27–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Some architectures are unable to perform unaligned accesses without the use of get_unaligned/put_unaligned. Others are unable to perform such accesses efficiently (e.g. trap on unaligned access and require fixing it up in the exception handler.)

This symbol should be selected by an architecture if it can perform unaligned accesses efficiently to allow different code paths to be selected for these cases. Some network drivers, for example, could opt to not fix up alignment problems with received packets if doing so would not help much.

See Documentation/core-api/unaligned-memory-access.rst for more information on the topic of unaligned memory accesses.

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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