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arm64: add Cortex-A57 erratum 832075 workaround
authorAndre Przywara <andre.przywara@arm.com>
Fri, 14 Nov 2014 15:54:11 +0000 (15:54 +0000)
committerWill Deacon <will.deacon@arm.com>
Tue, 25 Nov 2014 15:56:42 +0000 (15:56 +0000)
commit5afaa1fc1b320cec48affa7e6949f2493f875c12
tree6d7d20ce61c2939548c6b5105bc5130c4f7191actree | snapshot
parent301bcfac42897dbd1b0b3c1be49f24654a1bc49ecommit | diff
arm64: add Cortex-A57 erratum 832075 workaround

The ARM erratum 832075 applies to certain revisions of Cortex-A57,
one of the workarounds is to change device loads into using
load-aquire semantics.
This is achieved using the alternatives framework.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
arch/arm64/include/asm/cpufeature.h diff | blob | history
arch/arm64/include/asm/io.h diff | blob | history
arch/arm64/kernel/cpu_errata.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;