Align imported graphics buffers

Imported graphics buffers are most likely images. Align them for
tiled image access. 64KB seems to do the trick.

This fixes VM faults with OpenCL graphics interop.

Change-Id: I7f60e205d93fff9407e0d00d3dbb02cc4990b863
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>


[ROCm/ROCR-Runtime commit: dc2c52be78]

projects/rocr-runtime/src/fmm.c

@@ -2463,6 +2463,7 @@ HSAKMT_STATUS fmm_register_graphics_handle(HSAuint64 GraphicsResourceHandle,
 	uint64_t offset;
 	int r;
 	HSAKMT_STATUS status = HSAKMT_STATUS_ERROR;
+	static const uint64_t IMAGE_ALIGN = 64*1024;
 
 	if (gpu_id_array_size > 0 && !gpu_id_array)
 		return HSAKMT_STATUS_INVALID_PARAMETER;
@@ -2503,7 +2504,8 @@ HSAKMT_STATUS fmm_register_graphics_handle(HSAuint64 GraphicsResourceHandle,
 	if (!aperture_is_valid(aperture->base, aperture->limit))
 		goto error_free_metadata;
 	pthread_mutex_lock(&aperture->fmm_mutex);
-	mem = aperture_allocate_area(aperture, infoArgs.size, offset);
+	mem = aperture_allocate_area_aligned(aperture, infoArgs.size, offset,
+					     MAX(aperture->align, IMAGE_ALIGN));
 	pthread_mutex_unlock(&aperture->fmm_mutex);
 	if (!mem)
 		goto error_free_metadata;