[PATCH v4] ARM: Add check for Cortex-A15 errata 798181 ECO

Will Deacon will.deacon at arm.com
Fri Aug 30 05:11:00 EDT 2013

On Sun, Aug 25, 2013 at 03:25:47PM +0100, Rob Herring wrote:
> From: Rob Herring <rob.herring at calxeda.com>
> The work-around for A15 errata 798181 is not needed if appropriate ECO
> fixes have been applied to r3p2 and earlier core revisions. This can be
> checked by reading REVIDR register bits 4 and 9. If only bit 4 is set,
> then the IPI broadcast can be skipped.
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> ---
> v4:
> - Move code from setup.c back to smp_tlb.c
> - Use IS_ENABLED macro

Reviewed-by: Will Deacon <will.deacon at arm.com>

Note that you might get some trivial conflicts with my barriers series,
which is merged in rmk/devel-stable (and therefore -next).


More information about the linux-arm-kernel mailing list