diff options
| author | Vasant Hegde <vasant.hegde@amd.com> | 2023-09-21 09:21:47 +0000 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-09-25 12:39:07 +0200 |
| commit | 7016b3005547bae3ba4577980db0ede53a79784a (patch) | |
| tree | a58a256cd9efab09bdd0eb6245c7f30a03b299cb /drivers/iommu/amd/init.c | |
| parent | eda8c2860ab6799620c6fbb8600d56e32f437a90 (diff) | |
iommu/amd: Initialize iommu_device->max_pasids
Commit 1adf3cc20d69 ("iommu: Add max_pasids field in struct iommu_device")
introduced a variable struct iommu_device.max_pasids to track max
PASIDS supported by each IOMMU.
Let us initialize this field for AMD IOMMU. IOMMU core will use this value
to set max PASIDs per device (see __iommu_probe_device()).
Also remove unused global 'amd_iommu_max_pasid' variable.
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230921092147.5930-15-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/init.c')
| -rw-r--r-- | drivers/iommu/amd/init.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 06b319006ce2..463e68a88b17 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -185,8 +185,6 @@ static int amd_iommus_present; bool amd_iommu_np_cache __read_mostly; bool amd_iommu_iotlb_sup __read_mostly = true; -u32 amd_iommu_max_pasid __read_mostly = ~0; - static bool amd_iommu_pc_present __read_mostly; bool amdr_ivrs_remap_support __read_mostly; @@ -2080,16 +2078,13 @@ static int __init iommu_init_pci(struct amd_iommu *iommu) if (check_feature(FEATURE_GT)) { int glxval; - u32 max_pasid; u64 pasmax; pasmax = amd_iommu_efr & FEATURE_PASID_MASK; pasmax >>= FEATURE_PASID_SHIFT; - max_pasid = (1 << (pasmax + 1)) - 1; - - amd_iommu_max_pasid = min(amd_iommu_max_pasid, max_pasid); + iommu->iommu.max_pasids = (1 << (pasmax + 1)) - 1; - BUG_ON(amd_iommu_max_pasid & ~PASID_MASK); + BUG_ON(iommu->iommu.max_pasids & ~PASID_MASK); glxval = amd_iommu_efr & FEATURE_GLXVAL_MASK; glxval >>= FEATURE_GLXVAL_SHIFT; |