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Date:      Tue, 15 Oct 2019 22:21:59 +0000
From:      Marcin Cieslak <saper@saper.info>
To:        Stefan Parvu <sparvu@kronometrix.org>
Cc:        freebsd-xen@freebsd.org
Subject:   Re: cannot install FreeBSD 12.0 Xen 4.12.1 on Intel Core i7 CPU 930
Message-ID:  <nycvar.OFS.7.76.44444.807.1910152219400.87688@z.fncre.vasb>
In-Reply-To: <75CEEEC9-E1E3-4472-BDBF-DDDB96696854@kronometrix.org>
References:  <DEEE41ED-5D88-439B-B583-7C3450C696FF@kronometrix.org> <nycvar.OFS.7.76.44444.807.1910152152240.87688@z.fncre.vasb> <75CEEEC9-E1E3-4472-BDBF-DDDB96696854@kronometrix.org>

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--1563967779-2085296904-1571178119=:87688
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On Wed, 16 Oct 2019, Stefan Parvu wrote:

>>
>> 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.

No idea, just showing what I have. Maybe totally not relevant to what you are having -
I am going to try 12 and Xen 4.12.1 soon.

I also don't have "iommu=required,force" in my Xen commandline:

"dom0_mem=4096M dom0_max_vcpus=1 dom0pvh=1 com1=115200,8n1 guest_loglvl=all loglvl=all vga=text-80x43,keep console=vga"
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