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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-06 13:26:11 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-06 16:02:46 +0100 |
| commit | 66daec6b21840ea09af4c41f706867df7d81c820 (patch) | |
| tree | d7c4eb7c129fad4d2ab4f4c76d0f98acf39fb888 /drivers/gpu | |
| parent | 58174eac1593f104c03a15330e0fea1b1ec01434 (diff) | |
| download | blackbird-obmc-linux-66daec6b21840ea09af4c41f706867df7d81c820.tar.gz blackbird-obmc-linux-66daec6b21840ea09af4c41f706867df7d81c820.zip | |
drm/i915/gtt: Control cache domain of dma_map_page() directly
We already maually control the CPU cache for our page table directories,
so we can tell the dma mapper to skip doing it as well.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180706122611.4142-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 92a06042e0bf..e2793231ef49 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -564,6 +564,7 @@ static int __setup_page_dma(struct i915_address_space *vm, p->daddr = dma_map_page_attrs(vm->dma, p->page, 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL, + DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_NO_WARN); if (unlikely(dma_mapping_error(vm->dma, p->daddr))) { vm_free_page(vm, p->page); @@ -648,6 +649,7 @@ setup_scratch_page(struct i915_address_space *vm, gfp_t gfp) addr = dma_map_page_attrs(vm->dma, page, 0, size, PCI_DMA_BIDIRECTIONAL, + DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_NO_WARN); if (unlikely(dma_mapping_error(vm->dma, addr))) goto free_page; |
