From 1369459b2e219a6f4c861404c4f195cd81dcbb40 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Mon, 23 Jan 2023 16:35:54 -0400 Subject: [PATCH] iommu: Add a gfp parameter to iommu_map() The internal mechanisms support this, but instead of exposting the gfp to the caller it wrappers it into iommu_map() and iommu_map_atomic() Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT. Reviewed-by: Kevin Tian Signed-off-by: Jason Gunthorpe Reviewed-by: Mathieu Poirier Link: https://lore.kernel.org/r/1-v3-76b587fe28df+6e3-iommu_map_gfp_jgg@nvidia.com Signed-off-by: Joerg Roedel --- arch/arm/mm/dma-mapping.c | 11 +++++++---- .../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++- drivers/gpu/drm/tegra/drm.c | 2 +- drivers/gpu/host1x/cdma.c | 2 +- drivers/infiniband/hw/usnic/usnic_uiom.c | 4 ++-- drivers/iommu/dma-iommu.c | 2 +- drivers/iommu/iommu.c | 22 +++++++++++----------- drivers/iommu/iommufd/pages.c | 6 ++++-- drivers/media/platform/qcom/venus/firmware.c | 2 +- drivers/net/ipa/ipa_mem.c | 6 ++++-- drivers/net/wireless/ath/ath10k/snoc.c | 2 +- drivers/net/wireless/ath/ath11k/ahb.c | 4 ++-- drivers/remoteproc/remoteproc_core.c | 5 +++-- drivers/vfio/vfio_iommu_type1.c | 9 +++++---- drivers/vhost/vdpa.c | 2 +- include/linux/iommu.h | 4 ++-- 16 files changed, 48 insertions(+), 38 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index c135f6e..8bc0107 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -984,7 +984,8 @@ __iommu_create_mapping(struct device *dev, struct page **pages, size_t size, len = (j - i) << PAGE_SHIFT; ret = iommu_map(mapping->domain, iova, phys, len, - __dma_info_to_prot(DMA_BIDIRECTIONAL, attrs)); + __dma_info_to_prot(DMA_BIDIRECTIONAL, attrs), + GFP_KERNEL); if (ret < 0) goto fail; iova += len; @@ -1207,7 +1208,8 @@ static int __map_sg_chunk(struct device *dev, struct scatterlist *sg, prot = __dma_info_to_prot(dir, attrs); - ret = iommu_map(mapping->domain, iova, phys, len, prot); + ret = iommu_map(mapping->domain, iova, phys, len, prot, + GFP_KERNEL); if (ret < 0) goto fail; count += len >> PAGE_SHIFT; @@ -1379,7 +1381,8 @@ static dma_addr_t arm_iommu_map_page(struct device *dev, struct page *page, prot = __dma_info_to_prot(dir, attrs); - ret = iommu_map(mapping->domain, dma_addr, page_to_phys(page), len, prot); + ret = iommu_map(mapping->domain, dma_addr, page_to_phys(page), len, + prot, GFP_KERNEL); if (ret < 0) goto fail; @@ -1443,7 +1446,7 @@ static dma_addr_t arm_iommu_map_resource(struct device *dev, prot = __dma_info_to_prot(dir, attrs) | IOMMU_MMIO; - ret = iommu_map(mapping->domain, dma_addr, addr, len, prot); + ret = iommu_map(mapping->domain, dma_addr, addr, len, prot, GFP_KERNEL); if (ret < 0) goto fail; diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c index 648ecf5..a4ac94a 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c @@ -475,7 +475,8 @@ gk20a_instobj_ctor_iommu(struct gk20a_instmem *imem, u32 npages, u32 align, u32 offset = (r->offset + i) << imem->iommu_pgshift; ret = iommu_map(imem->domain, offset, node->dma_addrs[i], - PAGE_SIZE, IOMMU_READ | IOMMU_WRITE); + PAGE_SIZE, IOMMU_READ | IOMMU_WRITE, + GFP_KERNEL); if (ret < 0) { nvkm_error(subdev, "IOMMU mapping failure: %d\n", ret); diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 7bd2e65..6ca9f39 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -1057,7 +1057,7 @@ void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma) *dma = iova_dma_addr(&tegra->carveout.domain, alloc); err = iommu_map(tegra->domain, *dma, virt_to_phys(virt), - size, IOMMU_READ | IOMMU_WRITE); + size, IOMMU_READ | IOMMU_WRITE, GFP_KERNEL); if (err < 0) goto free_iova; diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c index 103fda0..4ddfcd2 100644 --- a/drivers/gpu/host1x/cdma.c +++ b/drivers/gpu/host1x/cdma.c @@ -105,7 +105,7 @@ static int host1x_pushbuffer_init(struct push_buffer *pb) pb->dma = iova_dma_addr(&host1x->iova, alloc); err = iommu_map(host1x->domain, pb->dma, pb->phys, size, - IOMMU_READ); + IOMMU_READ, GFP_KERNEL); if (err) goto iommu_free_iova; } else { diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c index c301b3b..aeeaca6 100644 --- a/drivers/infiniband/hw/usnic/usnic_uiom.c +++ b/drivers/infiniband/hw/usnic/usnic_uiom.c @@ -277,7 +277,7 @@ iter_chunk: usnic_dbg("va 0x%lx pa %pa size 0x%zx flags 0x%x", va_start, &pa_start, size, flags); err = iommu_map(pd->domain, va_start, pa_start, - size, flags); + size, flags, GFP_KERNEL); if (err) { usnic_err("Failed to map va 0x%lx pa %pa size 0x%zx with err %d\n", va_start, &pa_start, size, err); @@ -294,7 +294,7 @@ iter_chunk: usnic_dbg("va 0x%lx pa %pa size 0x%zx flags 0x%x\n", va_start, &pa_start, size, flags); err = iommu_map(pd->domain, va_start, pa_start, - size, flags); + size, flags, GFP_KERNEL); if (err) { usnic_err("Failed to map va 0x%lx pa %pa size 0x%zx with err %d\n", va_start, &pa_start, size, err); diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index f798c44..8bdb65e 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1615,7 +1615,7 @@ static struct iommu_dma_msi_page *iommu_dma_get_msi_page(struct device *dev, if (!iova) goto out_free_page; - if (iommu_map(domain, iova, msi_addr, size, prot)) + if (iommu_map(domain, iova, msi_addr, size, prot, GFP_KERNEL)) goto out_free_iova; INIT_LIST_HEAD(&msi_page->list); diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index de91dd8..4d596b8 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -930,7 +930,7 @@ map_end: if (map_size) { ret = iommu_map(domain, addr - map_size, addr - map_size, map_size, - entry->prot); + entry->prot, GFP_KERNEL); if (ret) goto out; map_size = 0; @@ -2360,31 +2360,31 @@ static int __iommu_map(struct iommu_domain *domain, unsigned long iova, return ret; } -static int _iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t paddr, size_t size, int prot, gfp_t gfp) +int iommu_map(struct iommu_domain *domain, unsigned long iova, + phys_addr_t paddr, size_t size, int prot, gfp_t gfp) { const struct iommu_domain_ops *ops = domain->ops; int ret; + might_sleep_if(gfpflags_allow_blocking(gfp)); + + /* Discourage passing strange GFP flags */ + if (WARN_ON_ONCE(gfp & (__GFP_COMP | __GFP_DMA | __GFP_DMA32 | + __GFP_HIGHMEM))) + return -EINVAL; + ret = __iommu_map(domain, iova, paddr, size, prot, gfp); if (ret == 0 && ops->iotlb_sync_map) ops->iotlb_sync_map(domain, iova, size); return ret; } - -int iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t paddr, size_t size, int prot) -{ - might_sleep(); - return _iommu_map(domain, iova, paddr, size, prot, GFP_KERNEL); -} EXPORT_SYMBOL_GPL(iommu_map); int iommu_map_atomic(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot) { - return _iommu_map(domain, iova, paddr, size, prot, GFP_ATOMIC); + return iommu_map(domain, iova, paddr, size, prot, GFP_ATOMIC); } EXPORT_SYMBOL_GPL(iommu_map_atomic); diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c index 1e1d350..22cc3bb 100644 --- a/drivers/iommu/iommufd/pages.c +++ b/drivers/iommu/iommufd/pages.c @@ -456,7 +456,8 @@ static int batch_iommu_map_small(struct iommu_domain *domain, size % PAGE_SIZE); while (size) { - rc = iommu_map(domain, iova, paddr, PAGE_SIZE, prot); + rc = iommu_map(domain, iova, paddr, PAGE_SIZE, prot, + GFP_KERNEL); if (rc) goto err_unmap; iova += PAGE_SIZE; @@ -500,7 +501,8 @@ static int batch_to_domain(struct pfn_batch *batch, struct iommu_domain *domain, else rc = iommu_map(domain, iova, PFN_PHYS(batch->pfns[cur]) + page_offset, - next_iova - iova, area->iommu_prot); + next_iova - iova, area->iommu_prot, + GFP_KERNEL); if (rc) goto err_unmap; iova = next_iova; diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index 142d4c7..07d4dce 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -158,7 +158,7 @@ static int venus_boot_no_tz(struct venus_core *core, phys_addr_t mem_phys, core->fw.mapped_mem_size = mem_size; ret = iommu_map(iommu, VENUS_FW_START_ADDR, mem_phys, mem_size, - IOMMU_READ | IOMMU_WRITE | IOMMU_PRIV); + IOMMU_READ | IOMMU_WRITE | IOMMU_PRIV, GFP_KERNEL); if (ret) { dev_err(dev, "could not map video firmware region\n"); return ret; diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c index 9ec5af3..991a7d3 100644 --- a/drivers/net/ipa/ipa_mem.c +++ b/drivers/net/ipa/ipa_mem.c @@ -466,7 +466,8 @@ static int ipa_imem_init(struct ipa *ipa, unsigned long addr, size_t size) size = PAGE_ALIGN(size + addr - phys); iova = phys; /* We just want a direct mapping */ - ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE); + ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE, + GFP_KERNEL); if (ret) return ret; @@ -574,7 +575,8 @@ static int ipa_smem_init(struct ipa *ipa, u32 item, size_t size) size = PAGE_ALIGN(size + addr - phys); iova = phys; /* We just want a direct mapping */ - ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE); + ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE, + GFP_KERNEL); if (ret) return ret; diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index cfcb759..9a82f03 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -1639,7 +1639,7 @@ static int ath10k_fw_init(struct ath10k *ar) ret = iommu_map(iommu_dom, ar_snoc->fw.fw_start_addr, ar->msa.paddr, ar->msa.mem_size, - IOMMU_READ | IOMMU_WRITE); + IOMMU_READ | IOMMU_WRITE, GFP_KERNEL); if (ret) { ath10k_err(ar, "failed to map firmware region: %d\n", ret); goto err_iommu_detach; diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c index d34a4d6..df8fdc7 100644 --- a/drivers/net/wireless/ath/ath11k/ahb.c +++ b/drivers/net/wireless/ath/ath11k/ahb.c @@ -1021,7 +1021,7 @@ static int ath11k_ahb_fw_resources_init(struct ath11k_base *ab) ret = iommu_map(iommu_dom, ab_ahb->fw.msa_paddr, ab_ahb->fw.msa_paddr, ab_ahb->fw.msa_size, - IOMMU_READ | IOMMU_WRITE); + IOMMU_READ | IOMMU_WRITE, GFP_KERNEL); if (ret) { ath11k_err(ab, "failed to map firmware region: %d\n", ret); goto err_iommu_detach; @@ -1029,7 +1029,7 @@ static int ath11k_ahb_fw_resources_init(struct ath11k_base *ab) ret = iommu_map(iommu_dom, ab_ahb->fw.ce_paddr, ab_ahb->fw.ce_paddr, ab_ahb->fw.ce_size, - IOMMU_READ | IOMMU_WRITE); + IOMMU_READ | IOMMU_WRITE, GFP_KERNEL); if (ret) { ath11k_err(ab, "failed to map firmware CE region: %d\n", ret); goto err_iommu_unmap; diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 1cd4815..80072b6 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -643,7 +643,8 @@ static int rproc_handle_devmem(struct rproc *rproc, void *ptr, if (!mapping) return -ENOMEM; - ret = iommu_map(rproc->domain, rsc->da, rsc->pa, rsc->len, rsc->flags); + ret = iommu_map(rproc->domain, rsc->da, rsc->pa, rsc->len, rsc->flags, + GFP_KERNEL); if (ret) { dev_err(dev, "failed to map devmem: %d\n", ret); goto out; @@ -737,7 +738,7 @@ static int rproc_alloc_carveout(struct rproc *rproc, } ret = iommu_map(rproc->domain, mem->da, dma, mem->len, - mem->flags); + mem->flags, GFP_KERNEL); if (ret) { dev_err(dev, "iommu_map failed: %d\n", ret); goto free_mapping; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 23c24fe..e14f86a 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -1480,7 +1480,8 @@ 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); + npage << PAGE_SHIFT, prot | IOMMU_CACHE, + GFP_KERNEL); if (ret) goto unwind; @@ -1777,8 +1778,8 @@ static int vfio_iommu_replay(struct vfio_iommu *iommu, size = npage << PAGE_SHIFT; } - ret = iommu_map(domain->domain, iova, phys, - size, dma->prot | IOMMU_CACHE); + ret = iommu_map(domain->domain, iova, phys, size, + dma->prot | IOMMU_CACHE, GFP_KERNEL); if (ret) { if (!dma->iommu_mapped) { vfio_unpin_pages_remote(dma, iova, @@ -1866,7 +1867,7 @@ static void vfio_test_domain_fgsp(struct vfio_domain *domain) return; ret = iommu_map(domain->domain, 0, page_to_phys(pages), PAGE_SIZE * 2, - IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE); + IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE, GFP_KERNEL); if (!ret) { size_t unmapped = iommu_unmap(domain->domain, 0, PAGE_SIZE); diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index ec32f78..fd1536d 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -792,7 +792,7 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, struct vhost_iotlb *iotlb, r = ops->set_map(vdpa, asid, iotlb); } else { r = iommu_map(v->domain, iova, pa, size, - perm_to_iommu_flags(perm)); + perm_to_iommu_flags(perm), GFP_KERNEL); } if (r) { vhost_iotlb_del_range(iotlb, iova, iova + size - 1); diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 46e1347..d202099 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -467,7 +467,7 @@ extern int iommu_sva_unbind_gpasid(struct iommu_domain *domain, extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev); extern struct iommu_domain *iommu_get_dma_domain(struct device *dev); extern int iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t paddr, size_t size, int prot); + phys_addr_t paddr, size_t size, int prot, gfp_t gfp); extern int iommu_map_atomic(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot); extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, @@ -773,7 +773,7 @@ static inline struct iommu_domain *iommu_get_domain_for_dev(struct device *dev) } static inline int iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t paddr, size_t size, int prot) + phys_addr_t paddr, size_t size, int prot, gfp_t gfp) { return -ENODEV; } -- 2.7.4