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Date:      Wed, 16 Oct 2019 14:35:44 +0300
From:      Stefan Parvu <sparvu@kronometrix.org>
To:        =?utf-8?Q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>
Cc:        Konstantin Belousov <kostikbel@gmail.com>, freebsd-xen@freebsd.org
Subject:   Re: cannot install FreeBSD 12.0 Xen 4.12.1 on Intel Core i7 CPU 930
Message-ID:  <FAB02CCA-CD1D-4F10-B8F3-44634172BD1D@kronometrix.org>
In-Reply-To: <20191016113047.GI14005@Air-de-Roger>
References:  <DEEE41ED-5D88-439B-B583-7C3450C696FF@kronometrix.org> <20191016084050.GD14005@Air-de-Roger> <4D6CBDA5-711B-4501-AFC1-A41D1134EF73@kronometrix.org> <20191016090022.GE14005@Air-de-Roger> <9D9848D6-2634-4777-9EE0-8DECAD2FE5CD@kronometrix.org> <20191016091230.GF14005@Air-de-Roger> <D812AE11-3DAC-4A0D-A576-50006DCBA1A5@kronometrix.org> <20191016092823.GG14005@Air-de-Roger> <20191016110755.GF73312@kib.kiev.ua> <20191016113047.GI14005@Air-de-Roger>

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> When booting plain FreeBSD, can you try the following?
> 
> # acpidump -t|grep DMAR
>  DMAR: Length=180, Revision=1, Checksum=195,
> 	OEMID=A M I, OEM Table ID=OEMDMAR, OEM Revision=0x1,
> 
> If you don't get output it means there's no DMAR ACPI table, and thus
> no VT-d support (at least from the OS point of view).

sure. Will try this and report back in couple of hours. 
From owner-freebsd-xen@freebsd.org  Wed Oct 16 15:16:15 2019
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Subject: Re: cannot install FreeBSD 12.0 Xen 4.12.1 on Intel Core i7 CPU 930
Date: Wed, 16 Oct 2019 18:15:33 +0300
In-Reply-To: <20191016113047.GI14005@Air-de-Roger>
Cc: Konstantin Belousov <kostikbel@gmail.com>, freebsd-xen@freebsd.org
To: =?utf-8?Q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>
References: <DEEE41ED-5D88-439B-B583-7C3450C696FF@kronometrix.org>
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 <4D6CBDA5-711B-4501-AFC1-A41D1134EF73@kronometrix.org>
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 <D812AE11-3DAC-4A0D-A576-50006DCBA1A5@kronometrix.org>
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> # acpidump -t|grep DMAR
>  DMAR: Length=180, Revision=1, Checksum=195,
> 	OEMID=A M I, OEM Table ID=OEMDMAR, OEM Revision=0x1,
> 

root@earth:~ # acpidump -t | grep DMAR
  DMAR: Length=288, Revision=1, Checksum=93,
	OEMID=AMI, OEM Table ID=OEMDMAR, OEM Revision=0x1,

this is it.

Stefan
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Date: Wed, 16 Oct 2019 17:27:36 +0200
From: Roger Pau =?iso-8859-1?Q?Monn=E9?= <roger.pau@citrix.com>
To: Stefan Parvu <sparvu@kronometrix.org>
CC: Konstantin Belousov <kostikbel@gmail.com>, <freebsd-xen@freebsd.org>
Subject: Re: cannot install FreeBSD 12.0 Xen 4.12.1 on Intel Core i7 CPU 930
Message-ID: <20191016152736.GJ14005@Air-de-Roger>
References: <20191016084050.GD14005@Air-de-Roger>
 <4D6CBDA5-711B-4501-AFC1-A41D1134EF73@kronometrix.org>
 <20191016090022.GE14005@Air-de-Roger>
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On Wed, Oct 16, 2019 at 06:15:33PM +0300, Stefan Parvu wrote:
> > # acpidump -t|grep DMAR
> >  DMAR: Length=180, Revision=1, Checksum=195,
> > 	OEMID=A M I, OEM Table ID=OEMDMAR, OEM Revision=0x1,
> > 
> 
> root@earth:~ # acpidump -t | grep DMAR
>   DMAR: Length=288, Revision=1, Checksum=93,
> 	OEMID=AMI, OEM Table ID=OEMDMAR, OEM Revision=0x1,

So there's an iommu, then it must be Xen refusing to use it.

Is it possible for you to setup a serial console in order to get the
full Xen boot log?

Also, IIRC X58 had some interrupt remapping issues, can you try to
boot with iommu=no-intremap? (without any other iommu options)

Thanks, Roger.



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