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Align imported graphics buffers

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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>
This commit is contained in:
Felix Kuehling
2017-07-17 11:16:10 -04:00
parent ac468f676c
commit dc2c52be78
1 changed files with 3 additions and 1 deletions
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src/fmm.c
+3 -1
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@@ -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;