vfio/type1: account iommu allocations

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>

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index eacd6ec04de5a42d58b1a677cffb12d514556f4b..b2854d7939ce02ddf2be186e483c0f8c3f094a26 100644 (file)
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -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) {
                ret = iommu_map(d->domain, iova, (phys_addr_t)pfn << PAGE_SHIFT,
                                npage << PAGE_SHIFT, prot | IOMMU_CACHE,
-                               GFP_KERNEL);
+                               GFP_KERNEL_ACCOUNT);
                if (ret)
                        goto unwind;
 
@@ -1750,7 +1750,8 @@ static int vfio_iommu_replay(struct vfio_iommu *iommu,
                        }
 
                        ret = iommu_map(domain->domain, iova, phys, size,
-                                       dma->prot | IOMMU_CACHE, GFP_KERNEL);
+                                       dma->prot | IOMMU_CACHE,
+                                       GFP_KERNEL_ACCOUNT);
                        if (ret) {
                                if (!dma->iommu_mapped) {
                                        vfio_unpin_pages_remote(dma, iova,
@@ -1845,7 +1846,8 @@ static void vfio_test_domain_fgsp(struct vfio_domain *domain, struct list_head *
                        continue;
 
                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) {
                        size_t unmapped = iommu_unmap(domain->domain, start, PAGE_SIZE);