x86, AMD IOMMU: add an emergency exit to the completion wait loop

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To make the loop waiting for the completion wait command not wait forever this
patch adds a limit of cycles that loop.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Joerg Roedel 2008-07-11 17:14:27 +02:00 • committed by Ingo Molnar

parent 9a836de0c9

commit 136f78a19c

1 changed files with 9 additions and 1 deletions

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arch/x86/kernel/amd_iommu.c

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