Interrupt remapping quirk tainting the kernel

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Hi Neil and all,

I have (once again) a question about this commit:

From: Neil Horman <nhorman@xxxxxxxxxxxxx>
Date: Tue, 16 Apr 2013 20:38:32 +0000
Subject: iommu/vt-d: add quirk for broken interrupt remapping on 55XX chipsets
Git-commit: 03bbcb2e7e292838bb0244f5a7816d194c911d62

When interrupt remapping is disabled by this quirk, the kernel gets
tainted. What is the rationale for doing that?

The user can boot with intremap=off. That will also disable interrupt
remapping, as the quirk does, but not taint the kernel. If this is
considered OK then I fail to see why the quirk should behave differently
and taint the kernel.

Thanks,
-- 
Jean Delvare
SUSE L3 Support

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