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(Cherry picked from radeon commits 8fc9a241ab59ffbcdc178d6415332c88a54e85fe, af1862a37570fa512a525ab47d72b30400d2e2d6, aa7825eb29cdf6ac9d7b28ad18186807ff384687, af6076241c0d322b295a4e898407ae2472bd8eb4 and d64a13ebe0ecd241ee3260dbffd8f4a01e254183) Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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