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...e, VTD_PAGE_SIZE); cfb94a372f2d4e Lu Baolu 2019-09-06 3948 struct dmar_domain *domain; cfb94a372f2d4e Lu Baolu 2019-09-06 3949 struct intel_iommu *iommu; cfb94a372f2d4e Lu Baolu 2019-09-06 3950 unsigned long iova_pfn; cfb94a372f2d4e Lu Baolu 2019-09-06 3951 unsigned long nrpages; cfb94a372f2d4e Lu Baolu 2019-09-06 3952 phys_addr_t tlb_addr; cfb94a372f2d4e Lu Baolu 2019-09-06 3953 int prot = 0; cfb94a372f2d4e Lu Baolu 2019-09-06 3954 int ret; cfb94a372f2d4e Lu Baolu 2019-09-06 3955 a11bfde9c77df1 Joerg Roedel 2020-02-17 3956 if (unlikely(atta...

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the

...AGE_MASK; + phys_addr &= PHYSICAL_PAGE_MASK; size = PAGE_ALIGN(last_addr+1) - phys_addr; retval = reserve_memtype(phys_addr, (u64)phys_addr + size, @@ -613,7 +611,7 @@ void __init early_iounmap(void __iomem *addr, unsigned long size) return; } offset = virt_addr & ~PAGE_MASK; - nrpages = PAGE_ALIGN(offset + size - 1) >> PAGE_SHIFT; + nrpages = PAGE_ALIGN(offset + size) >> PAGE_SHIFT; idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot; while (nrpages > 0) { diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c index 5d0e67f..e5d5e2c 100644 --- a/arch/x86/mm/kmmio.c...

...; +} + +static void intel_iommu_flush_iotlb_range(struct iommu_domain *domain, unsigned + long iova, size_t size, + struct page *freelist) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + unsigned long start_pfn, last_pfn; + unsigned long iova_pfn = IOVA_PFN(iova); + unsigned long nrpages; + int iommu_id; + + nrpages = aligned_nrpages(iova, size); + start_pfn = mm_to_dma_pfn(iova_pfn); + last_pfn = start_pfn + nrpages - 1; for_each_domain_iommu(iommu_id, dmar_domain) iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, - start_pfn, npages, !freelist, 0); +...

...; +} + +static void intel_iommu_flush_iotlb_range(struct iommu_domain *domain, unsigned + long iova, size_t size, + struct page *freelist) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + unsigned long start_pfn, last_pfn; + unsigned long iova_pfn = IOVA_PFN(iova); + unsigned long nrpages; + int iommu_id; + + nrpages = aligned_nrpages(iova, size); + start_pfn = mm_to_dma_pfn(iova_pfn); + last_pfn = start_pfn + nrpages - 1; for_each_domain_iommu(iommu_id, dmar_domain) iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, - start_pfn, npages, !freelist, 0); +...

...; +} + +static void intel_iommu_flush_iotlb_range(struct iommu_domain *domain, + unsigned long iova, size_t size, + struct page *freelist) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + unsigned long start_pfn, last_pfn; + unsigned long iova_pfn = IOVA_PFN(iova); + unsigned long nrpages; + int iommu_id; + + nrpages = aligned_nrpages(iova, size); + start_pfn = mm_to_dma_pfn(iova_pfn); + last_pfn = start_pfn + nrpages - 1; for_each_domain_iommu(iommu_id, dmar_domain) iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, - start_pfn, npages, !freelist, 0); +...

...; +} + +static void intel_iommu_flush_iotlb_range(struct iommu_domain *domain, unsigned + long iova, size_t size, + struct page *freelist) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + unsigned long start_pfn, last_pfn; + unsigned long iova_pfn = IOVA_PFN(iova); + unsigned long nrpages; + int iommu_id; + + nrpages = aligned_nrpages(iova, size); + start_pfn = mm_to_dma_pfn(iova_pfn); + last_pfn = start_pfn + nrpages - 1; for_each_domain_iommu(iommu_id, dmar_domain) iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, - start_pfn, npages, !freelist, 0); +...

...sh_iotlb_range(struct iommu_domain *domain, unsigned > + long iova, size_t size, > + struct page *freelist) > +{ > + struct dmar_domain *dmar_domain = to_dmar_domain(domain); > + unsigned long start_pfn, last_pfn; > + unsigned long iova_pfn = IOVA_PFN(iova); > + unsigned long nrpages; > + int iommu_id; > + > + nrpages = aligned_nrpages(iova, size); > + start_pfn = mm_to_dma_pfn(iova_pfn); > + last_pfn = start_pfn + nrpages - 1; > > for_each_domain_iommu(iommu_id, dmar_domain) > iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, > -...

...offsetof(struct virtio_balloon_config, num_pages), + &v, sizeof(v)); + return v; +} + +static inline s64 towards_target(struct virtio_balloon *vb) +{ + struct address_space *mapping = the_inode.inode.i_mapping; + u32 v = config_pages(vb); + + return (s64)v - (mapping ? mapping->nrpages : 0); +} + +static void update_balloon_size(struct virtio_balloon *vb) +{ + struct address_space *mapping = the_inode.inode.i_mapping; + __le32 actual = cpu_to_le32((mapping ? mapping->nrpages : 0)); + + vb->vdev->config->set(vb->vdev, + offsetof(struct virtio_balloon_config...

...offsetof(struct virtio_balloon_config, num_pages), + &v, sizeof(v)); + return v; +} + +static inline s64 towards_target(struct virtio_balloon *vb) +{ + struct address_space *mapping = the_inode.inode.i_mapping; + u32 v = config_pages(vb); + + return (s64)v - (mapping ? mapping->nrpages : 0); +} + +static void update_balloon_size(struct virtio_balloon *vb) +{ + struct address_space *mapping = the_inode.inode.i_mapping; + __le32 actual = cpu_to_le32((mapping ? mapping->nrpages : 0)); + + vb->vdev->config->set(vb->vdev, + offsetof(struct virtio_balloon_config...

...;> + > >> +static inline s64 towards_target(struct virtio_balloon *vb) > >> +{ > >> + struct address_space *mapping = the_inode.inode.i_mapping; > >> + u32 v = config_pages(vb); > >> + > >> + return (s64)v - (mapping ? mapping->nrpages : 0); > >> +} > >> + > >> +static void update_balloon_size(struct virtio_balloon *vb) > >> +{ > >> + struct address_space *mapping = the_inode.inode.i_mapping; > >> + __le32 actual = cpu_to_le32((mapping ? mapping->nrpages : 0)); &gt...

...;> + > >> +static inline s64 towards_target(struct virtio_balloon *vb) > >> +{ > >> + struct address_space *mapping = the_inode.inode.i_mapping; > >> + u32 v = config_pages(vb); > >> + > >> + return (s64)v - (mapping ? mapping->nrpages : 0); > >> +} > >> + > >> +static void update_balloon_size(struct virtio_balloon *vb) > >> +{ > >> + struct address_space *mapping = the_inode.inode.i_mapping; > >> + __le32 actual = cpu_to_le32((mapping ? mapping->nrpages : 0)); &gt...

...order = get_order(size); @@ -3673,9 +3639,6 @@ static void intel_unmap_sg(struct device *dev, struct scatterlist *sglist, struct scatterlist *sg; int i; - if (iommu_no_mapping(dev)) - return dma_direct_unmap_sg(dev, sglist, nelems, dir, attrs); - for_each_sg(sglist, sg, nelems, i) { nrpages += aligned_nrpages(sg_dma_address(sg), sg_dma_len(sg)); } @@ -3699,8 +3662,6 @@ static int intel_map_sg(struct device *dev, struct scatterlist *sglist, int nele struct intel_iommu *iommu; BUG_ON(dir == DMA_NONE); - if (iommu_no_mapping(dev)) - return dma_direct_map_sg(dev, sglist, nelems,...

This patch-set introduces a new virtio type "rproc_serial" for communicating with remote processors over shared memory. The driver depends on the the remoteproc framework. As preparation for introducing "rproc_serial" I've done a refactoring of the transmit buffer handling. NOTE: These two patches are identical to first two patches of the V8 patch-set, but are rebased to

This patch-set introduces a new virtio type "rproc_serial" for communicating with remote processors over shared memory. The driver depends on the the remoteproc framework. As preparation for introducing "rproc_serial" I've done a refactoring of the transmit buffer handling. NOTE: These two patches are identical to first two patches of the V8 patch-set, but are rebased to

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This patch-set introduces a new virtio type "rproc_serial" for communicating with remote processors over shared memory. The driver depends on the the remoteproc framework. As preparation for introducing "rproc_serial" I've done a refactoring of the transmit buffer handling. Changes since v7: - Rebased to

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This patch-set introduces a new virtio type "rproc_serial" for communicating with remote processors over shared memory. The driver depends on the the remoteproc framework. As preparation for introducing "rproc_serial" I've done a refactoring of the transmit buffer handling. Changes since v7: - Rebased to

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> I thought rebasing rproc_serial to linux-next was going to be trivial. But when starting the merge I realized that I had to refactor the the patches from Masami Hiramatsu. The splice support has the same issue as I faced, with different type of buffers in the out_vq. So I ended up refactoring the splice functionality. The code size

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> I thought rebasing rproc_serial to linux-next was going to be trivial. But when starting the merge I realized that I had to refactor the the patches from Masami Hiramatsu. The splice support has the same issue as I faced, with different type of buffers in the out_vq. So I ended up refactoring the splice functionality. The code size