intel-iommu: Make dma_pte_clear_range() use pfns
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
parent
66eae8469e
commit
04b18e65dd
|
@ -779,21 +779,17 @@ static void dma_pte_clear_one(struct dmar_domain *domain, unsigned long pfn)
|
||||||
/* clear last level pte, a tlb flush should be followed */
|
/* clear last level pte, a tlb flush should be followed */
|
||||||
static void dma_pte_clear_range(struct dmar_domain *domain, u64 start, u64 end)
|
static void dma_pte_clear_range(struct dmar_domain *domain, u64 start, u64 end)
|
||||||
{
|
{
|
||||||
int addr_width = agaw_to_width(domain->agaw);
|
unsigned long start_pfn = IOVA_PFN(start);
|
||||||
int npages;
|
unsigned long end_pfn = IOVA_PFN(end-1);
|
||||||
|
int addr_width = agaw_to_width(domain->agaw) - VTD_PAGE_SHIFT;
|
||||||
|
|
||||||
BUG_ON(start >> addr_width);
|
BUG_ON(addr_width < BITS_PER_LONG && start_pfn >> addr_width);
|
||||||
BUG_ON((end-1) >> addr_width);
|
BUG_ON(addr_width < BITS_PER_LONG && end_pfn >> addr_width);
|
||||||
|
|
||||||
/* in case it's partial page */
|
/* we don't need lock here; nobody else touches the iova range */
|
||||||
start &= PAGE_MASK;
|
while (start_pfn <= end_pfn) {
|
||||||
end = PAGE_ALIGN(end);
|
dma_pte_clear_one(domain, start_pfn);
|
||||||
npages = (end - start) / VTD_PAGE_SIZE;
|
start_pfn++;
|
||||||
|
|
||||||
/* we don't need lock here, nobody else touches the iova range */
|
|
||||||
while (npages--) {
|
|
||||||
dma_pte_clear_one(domain, start >> VTD_PAGE_SHIFT);
|
|
||||||
start += VTD_PAGE_SIZE;
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue