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PR/55285 CVS commit: src/sys/dev

The following reply was made to PR port-xen/55285; it has been noted by GNATS.

From: "Jaromir Dolecek" <>
Subject: PR/55285 CVS commit: src/sys/dev
Date: Tue, 28 Jul 2020 09:36:05 +0000

 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
 To generate a diff of this commit:
 cvs rdiff -u -r1.20 -r1.21 src/sys/dev/ic/nvmevar.h
 cvs rdiff -u -r1.27 -r1.28 src/sys/dev/pci/nvme_pci.c
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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