re: CVS commit: src/sys/dev

[matthew green <mrg%eterna.com.au@localhost>]

"Jaromir Dolecek" writes:
> Module Name:	src
> Committed By:	jdolecek
> Date:		Tue Jul 28 09:36:05 UTC 2020
> 
> Modified Files:
> 	src/sys/dev/ic: nvmevar.h
> 	src/sys/dev/pci: nvme_pci.c
> 
> Log Message:
> add a quirk to disable MSI, and enable it for Intel SSD DC P4500
> 
> this device seems to cause serious system responsiveness issues when configured
> to use MSI, while it works fine when configured for either INTx or MSI-X
> 
> this is important so this works well under Xen Dom0, which doesn't
> support MSI-X yet
> 
> fixes another issue reported as feedback for PR port-xen/55285 by Frank Kardel

i wonder if the label "force_intx" should be renamed now
that it can be active _after_ msi-x.

can't think of a good name, "skip_to_intx" maybe useful?

thanks.


.mrg.