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| author |  Vasant Hegde <vasant.hegde@amd.com>
| 2023-01-05 09:17:28 +0000 |
|---|---|---|
| committer |  Joerg Roedel <jroedel@suse.de>
| 2023-01-13 17:02:34 +0100 |
| commit | ba9bee7f59fd0687837222bc7b79dd9a5d127d0b (patch) | |
| tree | a6c4808fc3b8b3aa312951046391cb7a853cd18f /drivers/iommu/amd | |
| parent | Linux 6.2-rc3 (diff) | |
| download | linux-ba9bee7f59fd0687837222bc7b79dd9a5d127d0b.tar.gz linux-ba9bee7f59fd0687837222bc7b79dd9a5d127d0b.tar.bz2 linux-ba9bee7f59fd0687837222bc7b79dd9a5d127d0b.zip | |
iommu/amd: Do not allocate io_pgtable_ops for passthrough domain
In passthrough mode we do not use IOMMU page table. Hence we don't need
to allocate io_pgtable_ops.
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20230105091728.42469-1-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index cbeaab55c0db..b7c1eac1dfa5 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2072,6 +2072,10 @@ static struct protection_domain *protection_domain_alloc(unsigned int type) if (ret) goto out_err; + /* No need to allocate io pgtable ops in passthrough mode */ + if (type == IOMMU_DOMAIN_IDENTITY) + return domain; + pgtbl_ops = alloc_io_pgtable_ops(pgtable, &domain->iop.pgtbl_cfg, domain); if (!pgtbl_ops) { domain_id_free(domain->id); |