Currently, Kernel imposes a limit on VM. Thunk should be aware of it.
This fix is required till Kernel VM limit is sorted.
For now both "Host Access" memory and "Local Memory" share the same VM range.
Change-Id: I5a9220face20df9ede2b78bd6201a01dd2ea70e0
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Memory size is 64-bit. So use HSAuint64 instead of uint32.
Change-Id: Iaa607dec9c1a1c5ac46ea442fd482210ea550b45
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Patch submitted by Besar Wicaksono
1. Bug on detecting local memory size interpreted as 32 bit value
instead of 64. The bug causes thunk to go into an infinite loop trying
to reserve virtual address range for dgpu system memory.
2. SIMD count in the node property is 0. Runtime use this attribute to
find a gpu device.
Regarding other attributes of intel+tonga topology, Harish started a
discussion on August iirc, could you please share an update ?
This would help me progress with more tests such as scratch memory,
which require the scratch aperture information in order to construct a
buffer srd in gpuvm space.
3. Bug on releasing memory via fmm_release, where no actual release is
being done. The vm_object can't be found because the memory size does
not match due to the allocation padded the size with 32KB.
4. Pointer arithmetic on vm_area allocation/release. The value of
vm_area_t::end seems to be interpreted inconsistently whether it is
(start + size -1) or (start + size).
One example of potential issue I see is the logic could report
larger size of the hole in the vm area list.
5. Resource cleanup on multiple library load/unload within a single
process.
- Any memory allocation on subsequent library load will result
an error "va above limit". To my understanding this is due to
the reserved memory for the system memory not being released on unload.
- The static variable events_page needs to be invalidated
appropriately on library unload so the next load could
reinitialize it.
6. Could you please update if AQL queue is ready to test with the stg
kfd/kmt ?
7. The system memory allocation with size larger than 32KB seems to be
padded by an extra 32KB. I was wondering if we could remove this
overhead.
Change-Id: I039988d36637525089c7569dc3b77e58750e2121
__fmm_release expects gpu_id as parameter. fmm_release passed it instead the
index of the GPU in the gpu_mem array.
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Harish Kasiviswanathan
Ben Goz
Moses Reuben
Oded Gabbay
Alexey Skidanov