Re: [PATCH v5 02/15] arm64: errata: Add detection for TRBE overwrite in FILL mode

Will Deacon
2021-10-19T11:05:05Z

On Thu, Oct 14, 2021 at 11:31:12PM +0100, Suzuki K Poulose wrote:
> Arm Neoverse-N2 and the Cortex-A710 cores are affected
> by a CPU erratum where the TRBE will overwrite the trace buffer
> in FILL mode. The TRBE doesn't stop (as expected in FILL mode)
> when it reaches the limit and wraps to the base to continue
> writing upto 3 cache lines. This will overwrite any trace that
> was written previously.
>
> Add the Neoverse-N2 erratumi(#2139208) and Cortex-A710 erratum
> (#2119858) to the detection logic.

Weird typo and double space in this sentence.

Will