On 26/11/2025 12:09 pm, Leo Yan wrote:
On Fri, Nov 21, 2025 at 12:23:50AM +0000, Kuan-Wei Chiu wrote:
[...]
I noticed this issue while browsing the coresight code after attending a technical talk on the subject. This code dates back to the initial driver submission over 10 years ago, so I was surprised it hadn't been caught earlier. Although I cannot perform runtime testing, the logic error seems obvious to me, so I still decided to submit this patch.
I have a question for maintainers.
The ETMv4 architecture specification shows that ETMv4 was released as a non-confidential module in May 2013 (with the confidential release even a year earlier). So ETMv4 has been a public IP for more than 12+ years, and ETMv3 has been gradually retired since then.
This fix can still be applied to older kernels, but seems to me that now might be an appropriate time to consider removing the ETMv3 driver from the mainline kernel?
Thanks, Leo
Yeah, if anyone is using it it would be on an old kernel surely?