RE: [PATCH v3 3/3] x86/mce: Add CMCI storm switching support for Zhaoxin
From: Zhuo, Qiuxu
Date: Sat Sep 21 2024 - 01:39:37 EST
> From: Yazen Ghannam <yazen.ghannam@xxxxxxx>
> Sent: Friday, September 20, 2024 9:36 PM
> [...]
> > So, this is just you want to disable CMCI when a CMCI storm happens.
> > This doesn't explain much to me.
> > What's the problem if not disable CMCI when a CMCI storm happens?
> >
>
> A more direct way to handle an interrupt storm is to turn off the interrupt. The
> proposed AMD solution would also do this.
>
> Reprogramming the threshold to a high value does not 100% guarantee that a
> storm will be mitigated. But this is a necessary trade-off given that the CMCI is
> used to report other error types on Intel systems.
Thanks for your comments.