linux-kernel - Re: [PATCH 1/1] mce-inject: Add an MCE injection case with the yellow status set

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Message-ID: <ZzN5XvH80AEb5ksE@tassilo>
Date: Tue, 12 Nov 2024 07:50:54 -0800
From: Andi Kleen <ak@...ux.intel.com>
To: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
Cc: tony.luck@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mce-inject: Add an MCE injection case with the
 yellow status set

On Tue, Nov 12, 2024 at 03:37:29PM +0800, Qiuxu Zhuo wrote:
> Intel processors with the capability of 'threshold-based error status'
> use tracking hardware to monitor corrected errors of certain hardware
> components (e.g., CPU caches). If the tracking hardware overflows, a
> 'yellow' flag will be set in the MCI_STATUS[54:53] to indicate that
> the corrected errors of the associated hardware component exceed the
> predefined threshold. If so, then the system may need to be scheduled
> for servicing within a few weeks.
> 
> Add an MCE injection case with the yellow status set to test whether the
> events of threshold-based corrected errors are handled by Linux kernel
> or/and the user-space tools like mcelog or rasdaemon.

Added thanks.

-Andi