From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kenneth Graunke <kenneth@whitecape.org>
Subject: Re: [Intel gfx][i-g-t PATCH 1/4] lib: Clean the batch
 buffer store after reset
Date: Fri, 06 Dec 2013 02:14:52 -0800
Message-ID: <52A1A39C.6000905@whitecape.org>
References: <1386320087-3017-1-git-send-email-haihao.xiang@intel.com>
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To: "Xiang, Haihao" <haihao.xiang@intel.com>, intel-gfx@lists.freedesktop.org
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On 12/06/2013 12:54 AM, Xiang, Haihao wrote:
> From: "Xiang, Haihao" <haihao.xiang@intel.com>
> 
> Otherwise the stale data in the buffer
> 
> Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
> ---
>  lib/intel_batchbuffer.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c
> index 06a5437..9ce7424 100644
> --- a/lib/intel_batchbuffer.c
> +++ b/lib/intel_batchbuffer.c
> @@ -50,6 +50,8 @@ intel_batchbuffer_reset(struct intel_batchbuffer *batch)
>  	batch->bo = drm_intel_bo_alloc(batch->bufmgr, "batchbuffer",
>  				       BATCH_SZ, 4096);
>  
> +	memset(batch->buffer, 0, sizeof(batch->buffer));
> +
>  	batch->ptr = batch->buffer;
>  }
>  
> 

I don't think that should be harmful, but this would definitely make
debugging nicer.  For intel-gpu-tools, I think it makes sense.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>