From: Joerg Roedel <joro@8bytes.org>
To: "Li, Zhen-Hua" <zhen-hual@hp.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Donald Dutile <ddutile@redhat.com>, Linn Crosetto <linn@hp.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org
Subject: Re: [PATCH 1/1] iommu: DMAR reporting table needs at least one DRHD
Date: Thu, 20 Jun 2013 16:40:17 +0200 [thread overview]
Message-ID: <20130620144017.GA3589@8bytes.org> (raw)
In-Reply-To: <1369036652-20022-1-git-send-email-zhen-hual@hp.com>
On Mon, May 20, 2013 at 03:57:32PM +0800, Li, Zhen-Hua wrote:
> In intel vt-d spec , chapter 8.1 , DMA Remapping Reporting Structure.
> In the end of the table, it says:
>
> Remapping Structures[]
> -
> A list of structures. The list will contain one or
> more DMA Remapping Hardware Unit Definition
> (DRHD) structures, and zero or more Reserved
> Memory Region Reporting (RMRR) and Root Port
> ATS Capability Reporting (ATSR) structures.
> These structures are described below.
>
> So, there should be at least one DRHD structure in DMA Remapping
> reporting table. If there is no DRHD found, a warning is necessary.
>
> Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com>
Tweaked the error message a bit and applied to x86/vt-d, thanks.
prev parent reply other threads:[~2013-06-20 14:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-20 7:57 [PATCH 1/1] iommu: DMAR reporting table needs at least one DRHD Li, Zhen-Hua
2013-06-20 14:40 ` Joerg Roedel [this message]
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