| commit | 475d92fc6e72cd123dc5dbb9e70cdb80b0cfdf2d | |
| author | Will Deacon <will.deacon@arm.com> | |
| Tue, 28 Sep 2010 13:02:02 +0000 (28 14:02 +0100) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Mon, 4 Oct 2010 18:20:14 +0000 (4 19:20 +0100) | ||
| tree | c2c3e98575957a0eab1492da35921c982c5d2e1e | treesnapshot (tar.gz zip) |
| parent | c6ea21e35bf3691cad59647c771e6606067f627d | commitdiff |
ARM: 6416/1: errata: faulty hazard checking in the Store Buffer may lead to data corruption
On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur under very rare conditions due to a store buffer optimisation.
This workaround sets a bit in the diagnostic register of the Cortex-A9,
disabling the optimisation and preventing the problem from occurring.
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 under very rare conditions due to a store buffer optimisation.
This workaround sets a bit in the diagnostic register of the Cortex-A9,
disabling the optimisation and preventing the problem from occurring.
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 |