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Commit 6a0dbcbe authored by Joerg Roedel's avatar Joerg Roedel
Browse files

x86/amd-iommu: Add a gneric version of amd_iommu_flush_all_devices 



This patch adds a generic variant of
amd_iommu_flush_all_devices function which flushes only the
DTEs for a given protection domain.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent a6d41a40

arch/x86/kernel/amd_iommu.c

+8 −2
Original line number Diff line number Diff line
@@ -481,13 +481,14 @@ void amd_iommu_flush_all_domains(void) 
	}

}



void amd_iommu_flush_all_devices(void)

static void flush_devices_by_domain(struct protection_domain *domain)

{

	struct amd_iommu *iommu;

	int i;



	for (i = 0; i <= amd_iommu_last_bdf; ++i) {

		if (amd_iommu_pd_table[i] == NULL)

		if ((domain == NULL && amd_iommu_pd_table[i] == NULL) ||

		    (amd_iommu_pd_table[i] != domain))

			continue;



		iommu = amd_iommu_rlookup_table[i];
@@ -499,6 +500,11 @@ void amd_iommu_flush_all_devices(void) 
	}

}



void amd_iommu_flush_all_devices(void)

{

	flush_devices_by_domain(NULL);

}



/****************************************************************************

 *

 * The functions below are used the create the page table mappings for