On Wed, Nov 24, 2021 at 7:45 PM Mahesh J Salgaonkar <mah...@linux.ibm.com> wrote: > > No it doesn't. We will still do a presence check before the recovery > process starts. This patch moves the check after notifying the driver to > stop active I/O operations. If a presence check finds the device isn't > present, we will skip the EEH recovery. However, on a surprise hotplug, > the user will see the EEH messages on the console before it finds there > is nothing to recover.
Suppressing the spurious EEH messages was part of why I added that check in the first place. If you want to defer the presence check until later you should move the stack trace printing, etc to after we've confirmed there are still devices present. Considering the motivation for this patch is to avoid spurious warnings from the driver I don't think printing spurious EEH messages is much of an improvement. The other option would be returning an error from the pseries hotplug driver. IIRC that's what pnv_php / OPAL does if the PHB is fenced and we can't check the slot presence state.
