I think this patch is not correct. The EOP-mem is not associated with
the queue size. The EOP buffer is a separate buffer used by the firmware
to handle command completion. As I understand it, this allows more
concurrency, while still making it look like all commands in the queue
are completing in order.
Regards,
 Felix
On 2017-11-19 03:19 AM, Oded Gabbay wrote:
> On Thu, Nov 16, 2017 at 11:36 PM, Jan Vesely <jan.vesely at rutgers.edu> wrote:
>> Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
>> ---
>> drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
>> index f1d48281e322..b3bee39661ab 100644
>> --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
>> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
>> @@ -37,15 +37,16 @@ static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
>> enum kfd_queue_type type, unsigned int queue_size)
>> {
>> int retval;
>> + unsigned int size = ALIGN(queue_size, PAGE_SIZE);
>>
>> - retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
>> + retval = kfd_gtt_sa_allocate(dev, size, &kq->eop_mem);
>> if (retval != 0)
>> return false;
>>
>> kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
>> kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
>>
>> - memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
>> + memset(kq->eop_kernel_addr, 0, size);
>>
>> return true;
>> }
>> --
>> 2.13.6
>>
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>> amd-gfx at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
> Thanks!
> Applied to -next tree
> Oded
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