diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-04-24 10:16:34 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-04-26 12:57:42 +0300 |
| commit | c4d27ffaa8eb034ec438a9aedfe202ce81e15312 (patch) | |
| tree | 858f787fd5aa63069d39371b814ab0670abe0e79 /drivers/iommu/intel/iommu.c | |
| parent | 3b1d9e2b2d6856eabf5faa12d20c97fef657999f (diff) | |
| download | linux-c4d27ffaa8eb034ec438a9aedfe202ce81e15312.tar.xz | |
iommu/vt-d: Add cache tag invalidation helpers
Add several helpers to invalidate the caches after mappings in the
affected domain are changed.
- cache_tag_flush_range() invalidates a range of caches after mappings
within this range are changed. It uses the page-selective cache
invalidation methods.
- cache_tag_flush_all() invalidates all caches tagged by a domain ID.
It uses the domain-selective cache invalidation methods.
- cache_tag_flush_range_np() invalidates a range of caches when new
mappings are created in the domain and the corresponding page table
entries change from non-present to present.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240416080656.60968-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 8220bb36e420..473df7cd1672 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -54,11 +54,6 @@ __DOMAIN_MAX_PFN(gaw), (unsigned long)-1)) #define DOMAIN_MAX_ADDR(gaw) (((uint64_t)__DOMAIN_MAX_PFN(gaw)) << VTD_PAGE_SHIFT) -/* IO virtual address start page frame number */ -#define IOVA_START_PFN (1) - -#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT) - static void __init check_tylersburg_isoch(void); static int rwbf_quirk; @@ -1992,13 +1987,6 @@ domain_context_mapping(struct dmar_domain *domain, struct device *dev) domain_context_mapping_cb, domain); } -/* Returns a number of VTD pages, but aligned to MM page size */ -static unsigned long aligned_nrpages(unsigned long host_addr, size_t size) -{ - host_addr &= ~PAGE_MASK; - return PAGE_ALIGN(host_addr + size) >> VTD_PAGE_SHIFT; -} - /* Return largest possible superpage level for a given mapping */ static int hardware_largepage_caps(struct dmar_domain *domain, unsigned long iov_pfn, unsigned long phy_pfn, unsigned long pages) |