Re: [PATCH RFC] iommu/amd: Fix missing iommu_shutdown initializationin passthrough mode

[Joerg Roedel]

On Wed, Jun 06, 2012 at 10:50:06AM -0600, Shuah Khan wrote:
> Change AMD iommu driver to call disable iommus in pass-through mode. AMD
> iommu driver's amd_iommu_init() routine doesn't initialize iommu_shutdown
> in pass-through mode. As a result iommu disable via a call to disable_iommus()
> doesn't happen at shutdown. Enable and disable of iommus is inconsistent in
> pass-through mode. IOMMU is enabled, but not disabled. IOMMU disable is called
> from error legs in amd_iommu_init() in pass-through mode.
> 
> Requesting for comments as I don't have access to AMD system that supports
> IOMMU. I tested the change on AMD platforms with GART IOMMU which is not
> sufficient.
> 
> Signed-off-by: Shuah Khan <shuah.khan@xxxxxx>

The patch is fine. Thanks, applied to iommu/fixes.

-- 
AMD Operating System Research Center

Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/