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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-23 18:32:38 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-27 14:16:29 +0100 |
| commit | 318afd41d2eca3224de3fd85a3b9a27a3010a98d (patch) | |
| tree | 83434f1a39ee76536b4a987a25f4ff1153c41438 /arch/x86/kernel/amd_iommu_init.c | |
| parent | 09b4280439ef6fdc55f1353a9135034336eb5d26 (diff) | |
| download | blackbird-op-linux-318afd41d2eca3224de3fd85a3b9a27a3010a98d.tar.gz blackbird-op-linux-318afd41d2eca3224de3fd85a3b9a27a3010a98d.zip | |
x86/amd-iommu: Make np-cache a global flag
The non-present cache flag was IOMMU local until now which
doesn't make sense. Make this a global flag so we can remove
the lase user of 'struct iommu' in the map/unmap path.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 73d5173765d2..fbe4c3c02a91 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -141,6 +141,9 @@ LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the struct amd_iommu *amd_iommus[MAX_IOMMUS]; int amd_iommus_present; +/* IOMMUs have a non-present cache? */ +bool amd_iommu_np_cache __read_mostly; + /* * List of protection domains - used during resume */ @@ -891,6 +894,9 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h) init_iommu_from_acpi(iommu, h); init_iommu_devices(iommu); + if (iommu->cap & (1UL << IOMMU_CAP_NPCACHE)) + amd_iommu_np_cache = true; + return pci_enable_device(iommu->dev); } |
