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Commit 126c52be authored by Joerg Roedel's avatar Joerg Roedel Committed by Ingo Molnar
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AMD IOMMU: enable event logging 



The code to log IOMMU events is in place now. So enable event logging
with this patch.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 90008ee4

arch/x86/kernel/amd_iommu_init.c

+8 −0
Original line number Diff line number Diff line
@@ -253,6 +253,13 @@ void __init iommu_enable(struct amd_iommu *iommu) 
	iommu_feature_enable(iommu, CONTROL_IOMMU_EN);

}



/* Function to enable IOMMU event logging and event interrupts */

void __init iommu_enable_event_logging(struct amd_iommu *iommu)

{

	iommu_feature_enable(iommu, CONTROL_EVT_LOG_EN);

	iommu_feature_enable(iommu, CONTROL_EVT_INT_EN);

}



/*

 * mapping and unmapping functions for the IOMMU MMIO space. Each AMD IOMMU in

 * the system has one.
@@ -958,6 +965,7 @@ static void __init enable_iommus(void) 
	list_for_each_entry(iommu, &amd_iommu_list, list) {

		iommu_set_exclusion_range(iommu);

		iommu_init_msi(iommu);

		iommu_enable_event_logging(iommu);

		iommu_enable(iommu);

	}

}