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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: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-09-02 15:41:59 +02:00
parent a6d41a4027
commit 6a0dbcbe4e
1 changed files with 8 additions and 2 deletions
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10
arch/x86/kernel/amd_iommu.c
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@ -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