linux-kernel - DMAR-IR: IRQ remapping was enabled on dmar6 but we are not in kdump mode

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Date: Fri, 19 Jan 2024 15:45:03 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Jörg Rödel <joro@...tes.org>,
 Will Deacon <will@...nel.org>
Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: DMAR-IR: IRQ remapping was enabled on dmar6 but we are not in kdump
 mode

Dear Linux folks,


On a Dell PowerEdge T640, Linux 5.9 and 6.6.12 warn about kdump:

     [    2.728445] DMAR-IR: IRQ remapping was enabled on dmar6 but we 
are not in kdump mode
     [    2.736544] DMAR-IR: IRQ remapping was enabled on dmar5 but we 
are not in kdump mode
     [    2.744620] DMAR-IR: IRQ remapping was enabled on dmar4 but we 
are not in kdump mode
     [    2.752695] DMAR-IR: IRQ remapping was enabled on dmar3 but we 
are not in kdump mode
     [    2.760774] DMAR-IR: IRQ remapping was enabled on dmar2 but we 
are not in kdump mode
     [    2.768847] DMAR-IR: IRQ remapping was enabled on dmar1 but we 
are not in kdump mode
     [    2.776922] DMAR-IR: IRQ remapping was enabled on dmar0 but we 
are not in kdump mode
     [    2.784999] DMAR-IR: IRQ remapping was enabled on dmar7 but we 
are not in kdump mode

Looking through the logs, this only happens when using kexec to restart 
the system.


Kind regards,

Paul
View attachment "202401197–dell-xps-13-9360–linux-6.7-messages.txt" of type "text/plain" (96280 bytes)