From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: Chris Wright <chrisw@sous-sol.org>
Cc: "iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 8/9] x86/amd-iommu: Search for existind dev_data before allocting a new one
Date: Sat, 11 Jun 2011 12:29:47 +0200 [thread overview]
Message-ID: <20110611102947.GC29908@amd.com> (raw)
In-Reply-To: <20110610205226.GN23047@sequoia.sous-sol.org>
On Fri, Jun 10, 2011 at 04:52:26PM -0400, Chris Wright wrote:
> * Joerg Roedel (joerg.roedel@amd.com) wrote:
> > +static struct iommu_dev_data *search_dev_data(u16 devid)
> > +{
> > + struct iommu_dev_data *dev_data;
> > + unsigned long flags;
> > +
> > + spin_lock_irqsave(&dev_data_list_lock, flags);
> > + list_for_each_entry(dev_data, &dev_data_list, dev_data_list) {
> > + if (dev_data->devid == devid)
Right, multiple segments are not handled at all by the driver. The ACPI
tables support them in theory, but there are no systems to test those
things on.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2011-06-11 10:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-10 12:08 [PATCH 0/9] AMD IOMMU: Reduce dependency to struct device Joerg Roedel
2011-06-10 12:08 ` [PATCH 1/9] x86/amd-iommu: Remove redundant device_flush_dte() calls Joerg Roedel
2011-06-10 12:08 ` [PATCH 2/9] x86/amd-iommu: Introduce global dev_data_list Joerg Roedel
2011-06-10 17:36 ` Chris Wright
2011-06-11 10:27 ` Roedel, Joerg
2011-06-10 12:08 ` [PATCH 3/9] x86/amd-iommu: Store devid in dev_data Joerg Roedel
2011-06-10 12:08 ` [PATCH 4/9] x86/amd-iommu: Store ATS state " Joerg Roedel
2011-06-10 12:08 ` [PATCH 5/9] x86/amd-iommu: Use only dev_data for dte and iotlb flushing routines Joerg Roedel
2011-06-10 12:08 ` [PATCH 6/9] x86/amd-iommu: Use only dev_data in low-level domain attach/detach functions Joerg Roedel
2011-06-10 12:08 ` [PATCH 7/9] x86/amd-iommu: Allow dev_data->alias to be NULL Joerg Roedel
2011-06-10 12:08 ` [PATCH 8/9] x86/amd-iommu: Search for existind dev_data before allocting a new one Joerg Roedel
2011-06-10 20:52 ` Chris Wright
2011-06-11 10:29 ` Roedel, Joerg [this message]
2011-06-10 12:08 ` [PATCH 9/9] x86/amd-iommu: Store device alias as dev_data pointer Joerg Roedel
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