From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Konrad Rzeszutek Wilk <konrad@darnok.org>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: question about i915 driver in dom0
Date: Mon, 9 Jan 2012 10:04:37 -0500 [thread overview]
Message-ID: <20120109150436.GD25563@phenom.dumpdata.com> (raw)
In-Reply-To: <AADFC41AFE54684AB9EE6CBC0274A5D10FCB5812@SHSMSX101.ccr.corp.intel.com>
> > But more interestingly - are you building your kernel from scratch? There
>
> yes
>
> > was some requirements in having CONFIG_IOMMU_DMAR in the kernels -
> > otherwise
> > the intel-gtt.c would use the 'virt_to_phys' code instead of the DMA API.
>
> Suppose you mean CONFIG_DMAR_TABLE? There's no CONFIG_IOMMU_DMAR
> in the latest kernel. Yes, I didn't enable that option, and will have a try.
Yes, that is the option.
>
> But a side question is, will enabling VT-d in dom0 conflict with Xen's own
> VT-d operations?
No conflict. The Xen re-writes the DMAR table to be called XMAR so Linux's
parser won't pick it up.
next prev parent reply other threads:[~2012-01-09 15:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-27 6:47 question about i915 driver in dom0 Tian, Kevin
2012-01-03 16:59 ` Konrad Rzeszutek Wilk
2012-01-06 0:57 ` Tian, Kevin
2012-01-06 5:37 ` Tian, Kevin
2012-01-06 14:37 ` Konrad Rzeszutek Wilk
2012-01-09 5:09 ` Tian, Kevin
2012-01-09 15:04 ` Konrad Rzeszutek Wilk [this message]
2012-01-10 5:47 ` Tian, Kevin
2012-01-10 14:38 ` Konrad Rzeszutek Wilk
2012-01-12 2:27 ` Tian, Kevin
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