linux-kernel - [PATCH 5.16 0902/1039] Revert "drm/amdgpu: Dont inherit GEM object VMAs in child process"

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Date:   Mon, 24 Jan 2022 19:44:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Felix Kuehling <Felix.Kuehling@....com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.16 0902/1039] Revert "drm/amdgpu: Dont inherit GEM object VMAs in child process"

From: Rajneesh Bhardwaj <rajneesh.bhardwaj@....com>

commit 8b5da5a458c95ad49571a6a6285800bf13409616 upstream.

This reverts commit fbcdbfde87509d523132b59f661a355c731139d0.

Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -264,9 +264,6 @@ static int amdgpu_gem_object_mmap(struct
 	    !(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
 		vma->vm_flags &= ~VM_MAYWRITE;
 
-	if (bo->kfd_bo)
-		vma->vm_flags |= VM_DONTCOPY;
-
 	return drm_gem_ttm_mmap(obj, vma);
 }