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2d274bf709
If applications unmap the memory before destroying the userptr, it needs trigger a segfault to notify user space to correct the free sequence in VM debug mode. v2: Send gpu access fault to user space v3: Report gpu address to user space, remove unnecessary params v4: update pr_err into one line, remove userptr log info Signed-off-by: Shane Xiao <shane.xiao@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>