From: Samuel Pitoiset Date: Mon, 12 Jun 2023 16:25:08 +0000 (+0200) Subject: radv/amdgpu: workaround a kernel bug when replacing sparse mappings X-Git-Tag: upstream/23.3.3~6455 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9b00867327c2b266fcdebcef8bc7e7497eaab06b;p=platform%2Fupstream%2Fmesa.git radv/amdgpu: workaround a kernel bug when replacing sparse mappings AMDGPU has a bug when clearing mappings for BOs that are always valid in VM with OP_REPLACE. See https://lists.freedesktop.org/archives/amd-gfx/2023-June/094648.html The current workaround is to re-use OP_MAP/OP_UNMAP until all stable kernels have the fix. This partially reverts "radv/winsys: update sparse mappings with OP_REPLACE instead of OP_MAP/OP_UNMAP". Cc: mesa-stable Signed-off-by: Samuel Pitoiset Part-of: --- diff --git a/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c b/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c index 72771ab..9bca0d5 100644 --- a/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c +++ b/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c @@ -64,6 +64,42 @@ radv_amdgpu_bo_va_op(struct radv_amdgpu_winsys *ws, amdgpu_bo_handle bo, uint64_ return amdgpu_bo_va_op_raw(ws->dev, bo, offset, size, addr, flags, ops); } +static void +radv_amdgpu_winsys_virtual_map(struct radv_amdgpu_winsys *ws, struct radv_amdgpu_winsys_bo *bo, + const struct radv_amdgpu_map_range *range) +{ + uint64_t internal_flags = 0; + assert(range->size); + + if (!range->bo) { + internal_flags |= AMDGPU_VM_PAGE_PRT; + } + + int r = radv_amdgpu_bo_va_op(ws, range->bo ? range->bo->bo : NULL, range->bo_offset, range->size, + range->offset + bo->base.va, 0, internal_flags, AMDGPU_VA_OP_MAP); + if (r) + abort(); +} + +static void +radv_amdgpu_winsys_virtual_unmap(struct radv_amdgpu_winsys *ws, struct radv_amdgpu_winsys_bo *bo, + const struct radv_amdgpu_map_range *range) +{ + uint64_t internal_flags = 0; + assert(range->size); + + if (!range->bo) { + /* Even though this is an unmap, if we don't set this flag, + AMDGPU is going to complain about the missing buffer. */ + internal_flags |= AMDGPU_VM_PAGE_PRT; + } + + int r = radv_amdgpu_bo_va_op(ws, range->bo ? range->bo->bo : NULL, range->bo_offset, range->size, + range->offset + bo->base.va, 0, internal_flags, AMDGPU_VA_OP_UNMAP); + if (r) + abort(); +} + static int bo_comparator(const void *ap, const void *bp) { @@ -105,6 +141,11 @@ radv_amdgpu_winsys_rebuild_bo_list(struct radv_amdgpu_winsys_bo *bo) return VK_SUCCESS; } +/** + * TODO: Use OP_REPLACE instead of OP_MAP/OP_UNMAP when + * https://lists.freedesktop.org/archives/amd-gfx/2023-June/094648.html is merged in all kernels + * we need to support. + */ static VkResult radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_winsys_bo *_parent, uint64_t offset, uint64_t size, struct radeon_winsys_bo *_bo, uint64_t bo_offset) @@ -116,26 +157,10 @@ radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_wins int first = 0, last; struct radv_amdgpu_map_range new_first, new_last; VkResult result; - int r; assert(parent->is_virtual); assert(!bo || !bo->is_virtual); - /* When the BO is NULL, AMDGPU will reset the PTE VA range to the initial state. Otherwise, it - * will first unmap all existing VA that overlap the requested range and then map. - */ - if (bo) { - r = radv_amdgpu_bo_va_op(ws, bo->bo, bo_offset, size, parent->base.va + offset, 0, 0, AMDGPU_VA_OP_REPLACE); - } else { - r = - radv_amdgpu_bo_va_op(ws, NULL, 0, size, parent->base.va + offset, 0, AMDGPU_VM_PAGE_PRT, AMDGPU_VA_OP_REPLACE); - } - - if (r) { - fprintf(stderr, "radv/amdgpu: Failed to replace a PRT VA region (%d).\n", r); - return VK_ERROR_OUT_OF_DEVICE_MEMORY; - } - /* We have at most 2 new ranges (1 by the bind, and another one by splitting a range that * contains the newly bound range). */ if (parent->range_capacity - parent->range_count < 2) { @@ -166,6 +191,7 @@ radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_wins * whether to not create the corresponding split part. */ bool remove_first = parent->ranges[first].offset == offset; bool remove_last = parent->ranges[last].offset + parent->ranges[last].size == offset + size; + bool unmapped_first = false; assert(parent->ranges[first].offset <= offset); assert(parent->ranges[last].offset + parent->ranges[last].size >= offset + size); @@ -189,6 +215,11 @@ radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_wins range_count_delta = 1 - (last - first + 1) + !remove_first + !remove_last; new_idx = first + !remove_first; + /* Any range between first and last is going to be entirely covered by the new range so just + * unmap them. */ + for (int i = first + 1; i < last; ++i) + radv_amdgpu_winsys_virtual_unmap(ws, parent, parent->ranges + i); + /* If the first/last range are not left alone we unmap then and optionally map * them again after modifications. Not that this implicitly can do the splitting * if first == last. */ @@ -196,16 +227,24 @@ radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_wins new_last = parent->ranges[last]; if (parent->ranges[first].offset + parent->ranges[first].size > offset || remove_first) { + radv_amdgpu_winsys_virtual_unmap(ws, parent, parent->ranges + first); + unmapped_first = true; + if (!remove_first) { new_first.size = offset - new_first.offset; + radv_amdgpu_winsys_virtual_map(ws, parent, &new_first); } } if (parent->ranges[last].offset < offset + size || remove_last) { + if (first != last || !unmapped_first) + radv_amdgpu_winsys_virtual_unmap(ws, parent, parent->ranges + last); + if (!remove_last) { new_last.size -= offset + size - new_last.offset; new_last.bo_offset += (offset + size - new_last.offset); new_last.offset = offset + size; + radv_amdgpu_winsys_virtual_map(ws, parent, &new_last); } } @@ -225,6 +264,8 @@ radv_amdgpu_winsys_bo_virtual_bind(struct radeon_winsys *_ws, struct radeon_wins parent->ranges[new_idx].bo = bo; parent->ranges[new_idx].bo_offset = bo_offset; + radv_amdgpu_winsys_virtual_map(ws, parent, parent->ranges + new_idx); + parent->range_count += range_count_delta; result = radv_amdgpu_winsys_rebuild_bo_list(parent); @@ -404,14 +445,7 @@ radv_amdgpu_winsys_bo_create(struct radeon_winsys *_ws, uint64_t size, unsigned bo->ranges[0].bo = NULL; bo->ranges[0].bo_offset = 0; - /* Reserve a PRT VA region. */ - r = radv_amdgpu_bo_va_op(ws, NULL, 0, size, bo->base.va, 0, AMDGPU_VM_PAGE_PRT, AMDGPU_VA_OP_MAP); - if (r) { - fprintf(stderr, "radv/amdgpu: Failed to reserve a PRT VA region (%d).\n", r); - result = VK_ERROR_OUT_OF_DEVICE_MEMORY; - goto error_ranges_alloc; - } - + radv_amdgpu_winsys_virtual_map(ws, bo, bo->ranges); radv_amdgpu_log_bo(ws, bo, false); *out_bo = (struct radeon_winsys_bo *)bo;