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iommu/vt-d: Use cache_tag_flush_range_np() in iotlb_sync_map

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The iotlb_sync_map callback is called by the iommu core after non-present
to present mappings are created. The iommu driver uses this callback to
invalidate caches if IOMMU is working in caching mode and second-only
translation is used for the domain. Use cache_tag_flush_range_np() in this
callback.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240416080656.60968-7-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2024-04-24 15:16:38 +08:00 • committed by Joerg Roedel
parent a600ccd0a3
commit 129dab6e12
1 changed files with 1 additions and 21 deletions
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22
drivers/iommu/intel/iommu.c
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@ -1501,20 +1501,6 @@ static void iommu_flush_iotlb_psi(struct intel_iommu *iommu,
iommu_flush_dev_iotlb(domain, addr, mask);
}
/* Notification for newly created mappings */
static void __mapping_notify_one(struct intel_iommu *iommu, struct dmar_domain *domain,
unsigned long pfn, unsigned int pages)
{
/*
* It's a non-present to present mapping. Only flush if caching mode
* and second level.
*/
if (cap_caching_mode(iommu->cap) && !domain->use_first_level)
iommu_flush_iotlb_psi(iommu, domain, pfn, pages, 0, 1);
else
iommu_flush_write_buffer(iommu);
}
/*
* Flush the relevant caches in nested translation if the domain
* also serves as a parent
@ -4544,14 +4530,8 @@ static bool risky_device(struct pci_dev *pdev)
static int intel_iommu_iotlb_sync_map(struct iommu_domain *domain,
unsigned long iova, size_t size)
{
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
unsigned long pages = aligned_nrpages(iova, size);
unsigned long pfn = iova >> VTD_PAGE_SHIFT;
struct iommu_domain_info *info;
unsigned long i;
cache_tag_flush_range_np(to_dmar_domain(domain), iova, iova + size - 1);
xa_for_each(&dmar_domain->iommu_array, i, info)
__mapping_notify_one(info->iommu, dmar_domain, pfn, pages);
return 0;
}