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Commit ccb50e03 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Flush iommu tlb in dma_ops_aperture_alloc() 



Since the allocator wraparound happens in this function now,
flush the iommu tlb there too.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 60e6a7cb

drivers/iommu/amd_iommu.c

+16 −5
Original line number Diff line number Diff line
@@ -1518,7 +1518,8 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, 
	return -ENOMEM;

}



static dma_addr_t dma_ops_aperture_alloc(struct aperture_range *range,

static dma_addr_t dma_ops_aperture_alloc(struct dma_ops_domain *dom,

					 struct aperture_range *range,

					 unsigned long pages,

					 unsigned long dma_mask,

					 unsigned long boundary_size,
@@ -1526,6 +1527,7 @@ static dma_addr_t dma_ops_aperture_alloc(struct aperture_range *range, 
{

	unsigned long offset, limit, flags;

	dma_addr_t address;

	bool flush = false;



	offset = range->offset >> PAGE_SHIFT;

	limit  = iommu_device_max_index(APERTURE_RANGE_PAGES, offset,
@@ -1534,17 +1536,24 @@ static dma_addr_t dma_ops_aperture_alloc(struct aperture_range *range, 
	spin_lock_irqsave(&range->bitmap_lock, flags);

	address = iommu_area_alloc(range->bitmap, limit, range->next_bit,

				   pages, offset, boundary_size, align_mask);

	if (address == -1)

	if (address == -1) {

		/* Nothing found, retry one time */

		address = iommu_area_alloc(range->bitmap, limit,

					   0, pages, offset, boundary_size,

					   align_mask);

		flush = true;

	}



	if (address != -1)

		range->next_bit = address + pages;



	spin_unlock_irqrestore(&range->bitmap_lock, flags);



	if (flush) {

		domain_flush_tlb(&dom->domain);

		domain_flush_complete(&dom->domain);

	}



	return address;

}
@@ -1566,12 +1575,14 @@ static unsigned long dma_ops_area_alloc(struct device *dev, 
				   1UL << (BITS_PER_LONG - PAGE_SHIFT);



	for (;i < max_index; ++i) {

		if (dom->aperture[i]->offset >= dma_mask)

		struct aperture_range *range = dom->aperture[i];



		if (range->offset >= dma_mask)

			break;



		next_bit = dom->aperture[i]->next_bit;

		next_bit  = range->next_bit;



		address = dma_ops_aperture_alloc(dom->aperture[i], pages,

		address = dma_ops_aperture_alloc(dom, dom->aperture[i], pages,

						 dma_mask, boundary_size,

						 align_mask);

		if (address != -1) {