Re: [PATCH v4] coresight-etm4x: add isb() before reading the TRCSTATR

On Thu, 16 Jan 2025 17:04:20 +0800, Yuanfang Zhang wrote:

As recommended by section 4.3.7 ("Synchronization when using system instructions to progrom the trace unit") of ARM IHI 0064H.b, the self-hosted trace analyzer must perform a Context synchronization event between writing to the TRCPRGCTLR and reading the TRCSTATR. Additionally, add an ISB between the each read of TRCSTATR on coresight_timeout() when using system instructions to program the trace unit.

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Applied, thanks!

[1/1] coresight-etm4x: add isb() before reading the TRCSTATR commit: 5bb4fbbcaa3a66c0fd9347a19e6dae86a48e63ab

Best regards,