CONFIG_PL310_ERRATA_727915: PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption

General informations

The Linux kernel configuration item CONFIG_PL310_ERRATA_727915 has multiple definitions:

PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption found in arch/arm/mm/Kconfig

The configuration item CONFIG_PL310_ERRATA_727915:

• prompt: PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption
• type: bool
• depends on: (none)
• defined in arch/arm/mm/Kconfig
• found in Linux kernels: 3.16–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

PL310 implements the Clean & Invalidate by Way L2 cache maintenance operation (offset 0x7FC). This operation runs in background so that PL310 can handle normal accesses while it is in progress. Under very rare circumstances, due to this erratum, write data can be lost when PL310 treats a cacheable write transaction during a Clean & Invalidate by Way operation. Revisions prior to r3p1 are affected by this errata (fixed in r3p1).

PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption found in arch/arm/Kconfig

The configuration item CONFIG_PL310_ERRATA_727915:

• prompt: PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption
• type: bool
• depends on: CONFIG_CACHE_L2X0
• defined in arch/arm/Kconfig
• found in Linux kernels: 3.2–3.15

Help text

PL310 implements the Clean & Invalidate by Way L2 cache maintenance operation (offset 0x7FC). This operation runs in background so that PL310 can handle normal accesses while it is in progress. Under very rare circumstances, due to this erratum, write data can be lost when PL310 treats a cacheable write transaction during a Clean & Invalidate by Way operation.

Background Clean & Invalidate by Way operation can cause data corruption found in arch/arm/Kconfig

The configuration item CONFIG_PL310_ERRATA_727915:

• prompt: Background Clean & Invalidate by Way operation can cause data corruption
• type: bool
• depends on: CONFIG_CACHE_L2X0
• defined in arch/arm/Kconfig
• found in Linux kernels: 2.6.39, 3.0–3.1

Help text

PL310 implements the Clean & Invalidate by Way L2 cache maintenance operation (offset 0x7FC). This operation runs in background so that PL310 can handle normal accesses while it is in progress. Under very rare circumstances, due to this erratum, write data can be lost when PL310 treats a cacheable write transaction during a Clean & Invalidate by Way operation.

Hardware

LKDDb

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• (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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