diff options
author | Maxime Ripard <maxime@cerno.tech> | 2020-02-17 12:34:34 +0300 |
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committer | Maxime Ripard <maxime@cerno.tech> | 2020-02-17 12:34:34 +0300 |
commit | 28f2aff1caa4997f58ca31179cad1b4a84a62827 (patch) | |
tree | 69fb4b0a752f3660ce022a4313f8c7b276bbcceb /drivers/gpu/drm/ttm | |
parent | 3e8a3844fefbaad911c596f02dd48c39188ffa81 (diff) | |
parent | 11a48a5a18c63fd7621bb050228cebf13566e4d8 (diff) | |
download | linux-28f2aff1caa4997f58ca31179cad1b4a84a62827.tar.xz |
Merge v5.6-rc2 into drm-misc-next
Lyude needs some patches in 5.6-rc2 and we didn't bring drm-misc-next
forward yet, so it looks like a good occasion.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_vm.c | 22 |
2 files changed, 17 insertions, 9 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index c8e359ded1df..f1f670642c97 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -218,7 +218,7 @@ static int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *m if (mem->placement & TTM_PL_FLAG_WC) addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); else - addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size); + addr = ioremap(mem->bus.base + mem->bus.offset, mem->bus.size); if (!addr) { (void) ttm_mem_io_lock(man, false); ttm_mem_io_free(bdev, mem); @@ -563,7 +563,7 @@ static int ttm_bo_ioremap(struct ttm_buffer_object *bo, map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, size); else - map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset, + map->virtual = ioremap(bo->mem.bus.base + bo->mem.bus.offset + offset, size); } return (!map->virtual) ? -ENOMEM : 0; diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index eebb4c06c04d..389128b8c4dd 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -179,7 +179,6 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, pgoff_t num_prefault) { struct vm_area_struct *vma = vmf->vma; - struct vm_area_struct cvma = *vma; struct ttm_buffer_object *bo = vma->vm_private_data; struct ttm_bo_device *bdev = bo->bdev; unsigned long page_offset; @@ -250,7 +249,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, goto out_io_unlock; } - cvma.vm_page_prot = ttm_io_prot(bo->mem.placement, prot); + prot = ttm_io_prot(bo->mem.placement, prot); if (!bo->mem.bus.is_iomem) { struct ttm_operation_ctx ctx = { .interruptible = false, @@ -266,7 +265,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, } } else { /* Iomem should not be marked encrypted */ - cvma.vm_page_prot = pgprot_decrypted(cvma.vm_page_prot); + prot = pgprot_decrypted(prot); } /* @@ -289,11 +288,20 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, pfn = page_to_pfn(page); } + /* + * Note that the value of @prot at this point may differ from + * the value of @vma->vm_page_prot in the caching- and + * encryption bits. This is because the exact location of the + * data may not be known at mmap() time and may also change + * at arbitrary times while the data is mmap'ed. + * See vmf_insert_mixed_prot() for a discussion. + */ if (vma->vm_flags & VM_MIXEDMAP) - ret = vmf_insert_mixed(&cvma, address, - __pfn_to_pfn_t(pfn, PFN_DEV)); + ret = vmf_insert_mixed_prot(vma, address, + __pfn_to_pfn_t(pfn, PFN_DEV), + prot); else - ret = vmf_insert_pfn(&cvma, address, pfn); + ret = vmf_insert_pfn_prot(vma, address, pfn, prot); /* Never error on prefaulted PTEs */ if (unlikely((ret & VM_FAULT_ERROR))) { @@ -325,7 +333,7 @@ vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf) if (ret) return ret; - prot = vm_get_page_prot(vma->vm_flags); + prot = vma->vm_page_prot; ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT); if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) return ret; |