On Tue, 10 Feb 2026 01:11:41 -0800 Breno Leitao [off-list ref] wrote:

Hello Andrew,

On Mon, Feb 02, 2026 at 06:27:38AM -0800, Breno Leitao wrote:

quoted

The kernel already tracks recoverable hardware errors (CPU, memory, PCI,
CXL, etc.) in the hwerr_data array for vmcoreinfo crash dump analysis.
However, this data is only accessible after a crash.

This series adds a sysfs directory at /sys/kernel/hwerr_recovery_stats/ to
expose these statistics at runtime, allowing monitoring tools to track
hardware health without requiring a kernel crash.

The directory contains one file per error subsystem:
  /sys/kernel/hwerr_recovery_stats/{cpu, memory, pci, cxl, others}

Each file contains a single integer representing the error count.

This is useful for:
- Proactive detection of failing hardware components
- Time-series tracking of recoverable errors
- System health monitoring in cloud environments

Is there a chance this could be included in the 6.20 merge window?

During the 7.0 merge window?  Sure.  I'll be taking a look at this (and
a whole lot more) after 7.0-rc1 is released.