| commit | a672e99b129e286df2e2697a1b603d82321117f3 | |
| author | Will Deacon <will.deacon@arm.com> | |
| Tue, 14 Sep 2010 08:53:02 +0000 (14 09:53 +0100) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Fri, 17 Sep 2010 09:16:52 +0000 (17 10:16 +0100) | ||
| tree | 3307cdb68df62a67d78309ecdf6c35cab7321892 | treesnapshot (tar.gz zip) |
| parent | 9f05027c7cb3cfe56a31892bd83391138d41a667 | commitdiff |
ARM: 6389/1: errata: incorrect hazard handling in the SCU may lead to data corruption
On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur if a shared cache line is replaced on one CPU as another CPU
is accessing it.
This workaround sets two bits in the diagnostic register of the Cortex-A9,
reducing the linefill issuing capabilities of the processor and
avoiding the erroneous behaviour.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur if a shared cache line is replaced on one CPU as another CPU
is accessing it.
This workaround sets two bits in the diagnostic register of the Cortex-A9,
reducing the linefill issuing capabilities of the processor and
avoiding the erroneous behaviour.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| arch/arm/Kconfig | diffblobblamehistory | |
| arch/arm/mm/proc-v7.S | diffblobblamehistory |