linux-kernel - Re: [patch 1/8] [Intel IOMMU] ACPI support for Intel Virtualization Technology for Directed I/O

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Message-Id: <200704092339.19923.lenb@kernel.org>
Date:	Mon, 9 Apr 2007 23:39:19 -0400
From:	Len Brown <lenb@...nel.org>
To:	Ashok Raj <ashok.raj@...el.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, ak@...e.de,
	gregkh@...e.de, muli@...ibm.com, asit.k.mallick@...el.com,
	suresh.b.siddha@...el.com, anil.s.keshavamurthy@...el.com,
	arjan@...ux.intel.com, shaohua.li@...el.com
Subject: Re: [patch 1/8] [Intel IOMMU] ACPI support for Intel Virtualization Technology for Directed I/O

On Monday 09 April 2007 17:55, Ashok Raj wrote:
> This patch contains basic ACPI parsing and enumeration support.

AFAICS, ACPI supplies the envelope which delivers the table,
and ACPI has some convenience structure definitions for that
table in include/acpi/actbl1.h (primarily for the acpixtract table dis-assembler),
but ACPI is otherwise not involved in IOMMU support.

Indeed, one might argue that all new functions in this patch series with
"acpi..." would more appropriately be called "pci...", since a cursory
scan of the IOMMU spec seems to suggest it is specific to PCI.

So on first blush, it looks like the only call to a function that begins with
"acpi" in this patch series should be acpi_get_table() from some IOMMU
specific file outside of drivers/acpi,
and the only modification to any code with an "acpi" in the file path or filename should
be any updates to the convenience structure definitions in acpitbl1.h

thanks,
-Len
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