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Date:      Wed, 16 Oct 2019 01:10:14 +0300
From:      Stefan Parvu <sparvu@kronometrix.org>
To:        Marcin Cieslak <saper@saper.info>
Cc:        freebsd-xen@freebsd.org
Subject:   Re: cannot install FreeBSD 12.0 Xen 4.12.1 on Intel Core i7 CPU 930
Message-ID:  <75CEEEC9-E1E3-4472-BDBF-DDDB96696854@kronometrix.org>
In-Reply-To: <nycvar.OFS.7.76.44444.807.1910152152240.87688@z.fncre.vasb>
References:  <DEEE41ED-5D88-439B-B583-7C3450C696FF@kronometrix.org> <nycvar.OFS.7.76.44444.807.1910152152240.87688@z.fncre.vasb>

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> 
> Does it happen in Xen or in FreeBSD dom0 kernel?

Xen. Here:
http://www.kronometrix.org/bugs/freebsd_xen.jpg

> I have Xeon E3-1234 but I run 11.2-STABLE with xen-kernel-4.7.2_9 for a very long time already.
> I also have:
> 
> hw.pci.mcfg=0
> machdep.hyperthreading_allowed=0

Should I add these to sysctl.conf ? I will try tomorrow. To me it looks whatever I try I cannot
get IOMMU on this hdw with FreeBSD 12 and Xen 4.12.1. I havent tried another FreeBSD version.

Previously this box was running Ubuntu 16.x and KVM with no problems.

Stefan


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