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x86/amd-iommu: Improve handling of full command buffer
authorJoerg Roedel <joerg.roedel@amd.com>
Wed, 6 Apr 2011 16:38:20 +0000 (18:38 +0200)
committerJoerg Roedel <joerg.roedel@amd.com>
Thu, 7 Apr 2011 08:46:07 +0000 (10:46 +0200)
This patch improved the handling of commands when the IOMMU
command buffer is nearly full. In this case it issues an
completion wait command and waits until the IOMMU has
processed it before continuing queuing new commands.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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