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iommu/vt-d: Use cache_tag_flush_range() in cache_invalidate_user

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The cache_invalidate_user callback is called to invalidate a range
of caches for the affected user domain. Use cache_tag_flush_range()
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/20240416080656.60968-9-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2024-04-24 15:16:40 +08:00 committed by Joerg Roedel
parent 06792d0679
commit 8ebc22366e
2 changed files with 9 additions and 47 deletions
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6
drivers/iommu/intel/iommu.h
View File

@ -1049,6 +1049,12 @@ static inline unsigned long aligned_nrpages(unsigned long host_addr, size_t size
return PAGE_ALIGN(host_addr + size) >> VTD_PAGE_SHIFT;
}
/* Return a size from number of VTD pages. */
static inline unsigned long nrpages_to_size(unsigned long npages)
{
return npages << VTD_PAGE_SHIFT;
}
/* Convert value to context PASID directory size field coding. */
#define context_pdts(pds) (((pds) & 0x7) << 9)

50
drivers/iommu/intel/nested.c
View File

@ -88,50 +88,6 @@ static void intel_nested_domain_free(struct iommu_domain *domain)
kfree(dmar_domain);
}
static void nested_flush_dev_iotlb(struct dmar_domain *domain, u64 addr,
unsigned int mask)
{
struct device_domain_info *info;
unsigned long flags;
u16 sid, qdep;
spin_lock_irqsave(&domain->lock, flags);
list_for_each_entry(info, &domain->devices, link) {
if (!info->ats_enabled)
continue;
sid = info->bus << 8 | info->devfn;
qdep = info->ats_qdep;
qi_flush_dev_iotlb(info->iommu, sid, info->pfsid,
qdep, addr, mask);
quirk_extra_dev_tlb_flush(info, addr, mask,
IOMMU_NO_PASID, qdep);
}
spin_unlock_irqrestore(&domain->lock, flags);
}
static void intel_nested_flush_cache(struct dmar_domain *domain, u64 addr,
u64 npages, bool ih)
{
struct iommu_domain_info *info;
unsigned int mask;
unsigned long i;
xa_for_each(&domain->iommu_array, i, info)
qi_flush_piotlb(info->iommu,
domain_id_iommu(domain, info->iommu),
IOMMU_NO_PASID, addr, npages, ih);
if (!domain->has_iotlb_device)
return;
if (npages == U64_MAX)
mask = 64 - VTD_PAGE_SHIFT;
else
mask = ilog2(__roundup_pow_of_two(npages));
nested_flush_dev_iotlb(domain, addr, mask);
}
static int intel_nested_cache_invalidate_user(struct iommu_domain *domain,
struct iommu_user_data_array *array)
{
@ -164,9 +120,9 @@ static int intel_nested_cache_invalidate_user(struct iommu_domain *domain,
break;
}
intel_nested_flush_cache(dmar_domain, inv_entry.addr,
inv_entry.npages,
inv_entry.flags & IOMMU_VTD_INV_FLAGS_LEAF);
cache_tag_flush_range(dmar_domain, inv_entry.addr,
inv_entry.addr + nrpages_to_size(inv_entry.npages) - 1,
inv_entry.flags & IOMMU_VTD_INV_FLAGS_LEAF);
processed++;
}