search for: pgprot_decrypt

...virtio_gpu_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) +{ + pgprot_t prot; + int ret; + + ret = drm_gem_shmem_mmap(obj, vma); + if (ret < 0) + return ret; + + /* virtio-gpu needs normal caching, so clear writecombine */ + prot = vm_get_page_prot(vma->vm_flags); + prot = pgprot_decrypted(prot); + vma->vm_page_prot = prot; + return 0; +} + static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = { .free = virtio_gpu_free_object, .open = virtio_gpu_gem_object_open, @@ -86,7 +102,7 @@ static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = { .get_sg_table =...

...virtio_gpu_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) +{ + pgprot_t prot; + int ret; + + ret = drm_gem_shmem_mmap(obj, vma); + if (ret < 0) + return ret; + + /* virtio-gpu needs normal caching, so clear writecombine */ + prot = vm_get_page_prot(vma->vm_flags); + prot = pgprot_decrypted(prot); + vma->vm_page_prot = prot; + return 0; +} + static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = { .free = virtio_gpu_free_object, .open = virtio_gpu_gem_object_open, @@ -86,7 +102,7 @@ static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = { .get_sg_table =...

...h/x86/entry/vdso/vma.c > @@ -185,7 +185,8 @@ static vm_fault_t vvar_fault(const struct vm_special_mapping *sm, > if (pvti && vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) { > return vmf_insert_pfn_prot(vma, vmf->address, > __pa(pvti) >> PAGE_SHIFT, > - pgprot_decrypted(vma->vm_page_prot)); > + pgprot_decrypted(vma->vm_page_prot), > + true); > } > } else if (sym_offset == image->sym_hvclock_page) { > pfn = hv_get_tsc_pfn(); > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem...

...CK)) >> >>>> { >> >>>>> return vmf_insert_pfn_prot(vma, vmf->address, >> >>>>> __pa(pvti) >> PAGE_SHIFT, >> >>>>> - pgprot_decrypted(vma- >> >>>>> vm_page_prot)); >> >>>>> + pgprot_decrypted(vma- >> >>>>> vm_page_prot), >> >>>>> + true); >> >>>>>...

...if (pvti && vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) >> { >>> return vmf_insert_pfn_prot(vma, vmf->address, >>> __pa(pvti) >> PAGE_SHIFT, >>> - pgprot_decrypted(vma- >>> vm_page_prot)); >>> + pgprot_decrypted(vma- >>> vm_page_prot), >>> + true); >>> } >>> } else if (sym_offset == image->sym_hvclock_page) { >&gt...

...vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) >>>> { >>>>> return vmf_insert_pfn_prot(vma, vmf->address, >>>>> __pa(pvti) >> PAGE_SHIFT, >>>>> - pgprot_decrypted(vma- >>>>> vm_page_prot)); >>>>> + pgprot_decrypted(vma- >>>>> vm_page_prot), >>>>> + true); >>>>> } >>>>> } else if (s...

...vm_area_struct *vma) > +{ > + pgprot_t prot; > + int ret; > + > + ret = drm_gem_shmem_mmap(obj, vma); > + if (ret < 0) > + return ret; > + > + /* virtio-gpu needs normal caching, so clear writecombine */ > + prot = vm_get_page_prot(vma->vm_flags); > + prot = pgprot_decrypted(prot); > + vma->vm_page_prot = prot; > + return 0; > +} There's similar code in udl, [1] which still uses writecombine for imported buffers. Virtio does not need this? Aside from this, do you think we could handle all special cases within shmem? Best regards Thomas [1] https:/...

...- /* VM_PFNMAP was set by drm_gem_mmap() */ - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); + vma->vm_ops = &drm_gem_shmem_vm_ops; /* Remove the fake offset */ vma->vm_pgoff -= drm_vma_node_start(&shmem->base.vma_node); diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index acb07fe06580..deca0c30...

...- /* VM_PFNMAP was set by drm_gem_mmap() */ - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); + vma->vm_ops = &drm_gem_shmem_vm_ops; /* Remove the fake offset */ vma->vm_pgoff -= drm_vma_node_start(&shmem->base.vma_node); diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index acb07fe06580..deca0c30...

...- /* VM_PFNMAP was set by drm_gem_mmap() */ - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); + vma->vm_ops = &drm_gem_shmem_vm_ops; /* Remove the fake offset */ vma->vm_pgoff -= drm_vma_node_start(&shmem->base.vma_node); diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index acb07fe06580..deca0c30...

..._reserved(struct vm_fault *vmf, }; ttm = bo->ttm; - if (ttm_tt_populate(bo->ttm, &ctx)) { - ret = VM_FAULT_OOM; - goto out_io_unlock; - } + if (ttm_tt_populate(bo->ttm, &ctx)) + return VM_FAULT_OOM; } else { /* Iomem should not be marked encrypted */ prot = pgprot_decrypted(prot); } /* We don't prefault on huge faults. Yet. */ - if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && fault_page_size != 1) { - ret = ttm_bo_vm_insert_huge(vmf, bo, page_offset, - fault_page_size, prot); - goto out_io_unlock; - } + if (IS_ENABLED(CONFIG_TRANSPARENT_HU...

Just a gentle ping on this. Already got the Acked-by from Daniel, but I need some of the nouveau guys to test this since I can only compile test it. Regards, Christian.

..., diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index e71abcec8d3913..6f86c925b8251d 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -330,9 +330,7 @@ pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs) { if (force_dma_unencrypted(dev)) prot = pgprot_decrypted(prot); - if (dev_is_dma_coherent(dev) || - (IS_ENABLED(CONFIG_DMA_NONCOHERENT_CACHE_SYNC) && - (attrs & DMA_ATTR_NON_CONSISTENT))) + if (dev_is_dma_coherent(dev)) return prot; #ifdef CONFIG_ARCH_HAS_DMA_WRITE_COMBINE if (attrs & DMA_ATTR_WRITE_COMBINE) @@ -46...

We are trying to remove the io_lru handling and depend on zero init base, offset and addr here. v2: init addr as well Signed-off-by: Christian K?nig <christian.koenig at amd.com> --- drivers/gpu/drm/ttm/ttm_bo.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index e3931e515906..772c640a6046 100644 ---

..., diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 848c95c27d79ff..dacdb7226caacd 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -330,9 +330,7 @@ pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs) { if (force_dma_unencrypted(dev)) prot = pgprot_decrypted(prot); - if (dev_is_dma_coherent(dev) || - (IS_ENABLED(CONFIG_DMA_NONCOHERENT_CACHE_SYNC) && - (attrs & DMA_ATTR_NON_CONSISTENT))) + if (dev_is_dma_coherent(dev)) return prot; #ifdef CONFIG_ARCH_HAS_DMA_WRITE_COMBINE if (attrs & DMA_ATTR_WRITE_COMBINE) @@ -46...

While working on TTM cleanups I've found that the io_reserve_lru used by Nouveau is actually not working at all. In general we should remove driver specific handling from the memory management, so this patch moves the io_reserve_lru handling into Nouveau instead. The patch should be functional correct, but is only compile tested! Signed-off-by: Christian König <christian.koenig at

Hi guys, so I got some hardware and tested this and after hammering out tons of typos it now seems to work fine. Could you give it more testing? Thanks in advance, Christian

Hi guys, I've already send this out in September last year, but only got a response from Daniel. Could you guys please test this and tell me what you think about it? Basically I'm trying to remove all driver specific features from TTM which don't need to be inside the framework. Thanks, Christian.

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. I'm still a

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. As a follow up I