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vfio/type1: account iommu allocations

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iommu allocations should be accounted in order to allow admins to
monitor and limit the amount of iommu memory.

Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231130200900.2320829-1-pasha.tatashin@soleen.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Pasha Tatashin 2023-11-30 20:09:00 +00:00 committed by Alex Williamson
parent 33cc938e65
commit 160912fc3d
1 changed files with 5 additions and 3 deletions
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8
drivers/vfio/vfio_iommu_type1.c
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@ -1436,7 +1436,7 @@ static int vfio_iommu_map(struct vfio_iommu *iommu, dma_addr_t iova,
list_for_each_entry(d, &iommu->domain_list, next) { list_for_each_entry(d, &iommu->domain_list, next) {
ret = iommu_map(d->domain, iova, (phys_addr_t)pfn << PAGE_SHIFT, ret = iommu_map(d->domain, iova, (phys_addr_t)pfn << PAGE_SHIFT,
npage << PAGE_SHIFT, prot | IOMMU_CACHE, npage << PAGE_SHIFT, prot | IOMMU_CACHE,
GFP_KERNEL); GFP_KERNEL_ACCOUNT);
if (ret) if (ret)
goto unwind; goto unwind;
@ -1750,7 +1750,8 @@ static int vfio_iommu_replay(struct vfio_iommu *iommu,
} }
ret = iommu_map(domain->domain, iova, phys, size, ret = iommu_map(domain->domain, iova, phys, size,
dma->prot | IOMMU_CACHE, GFP_KERNEL); dma->prot | IOMMU_CACHE,
GFP_KERNEL_ACCOUNT);
if (ret) { if (ret) {
if (!dma->iommu_mapped) { if (!dma->iommu_mapped) {
vfio_unpin_pages_remote(dma, iova, vfio_unpin_pages_remote(dma, iova,
@ -1845,7 +1846,8 @@ static void vfio_test_domain_fgsp(struct vfio_domain *domain, struct list_head *
continue; continue;
ret = iommu_map(domain->domain, start, page_to_phys(pages), PAGE_SIZE * 2, ret = iommu_map(domain->domain, start, page_to_phys(pages), PAGE_SIZE * 2,
IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE, GFP_KERNEL); IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE,
GFP_KERNEL_ACCOUNT);
if (!ret) { if (!ret) {
size_t unmapped = iommu_unmap(domain->domain, start, PAGE_SIZE); size_t unmapped = iommu_unmap(domain->domain, start, PAGE_SIZE);