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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-02 17:56:36 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:54 +0100 |
| commit | 863c74ebd0152b21bc4b11c1447b5d1429287d37 (patch) | |
| tree | a679b7a5754e365635b000fe4b529e181d773e02 /arch/x86/kernel | |
| parent | 5b28df6f43ac9878f310ad0cb7f11ddb262a7ac6 (diff) | |
AMD IOMMU: add device reference counting for protection domains
Impact: know how many devices are assigned to a domain
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 5c465c91150..8b45bc49d1c 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -825,9 +825,10 @@ static void set_device_domain(struct amd_iommu *iommu, u16 devid) { unsigned long flags; - u64 pte_root = virt_to_phys(domain->pt_root); + domain->dev_cnt += 1; + pte_root |= (domain->mode & DEV_ENTRY_MODE_MASK) << DEV_ENTRY_MODE_SHIFT; pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV; |