[Intel-gfx] [PATCH] drm/i915/selftest: Add move poison patterns

[Mika Kuoppala]

Chris Wilson <chris at chris-wilson.co.uk> writes:

> Throw in the inverse patterns to create more examples of poison to use
> against the LRC state.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>

Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/gt/selftest_lrc.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
> index e9e71c52b34d..6f06ba750a0a 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
> @@ -5290,8 +5290,9 @@ static int live_lrc_isolation(void *arg)
>  	const u32 poison[] = {
>  		STACK_MAGIC,
>  		0x3a3a3a3a,
> -		0xc5c5c5c5,
> +		0x5c5c5c5c,
>  		0xffffffff,
> +		0xffff0000,
>  	};
>  
>  	/*
> @@ -5317,6 +5318,10 @@ static int live_lrc_isolation(void *arg)
>  				err = __lrc_isolation(engine, poison[i]);
>  				if (err)
>  					break;
> +
> +				err = __lrc_isolation(engine, ~poison[i]);
> +				if (err)
> +					break;
>  			}
>  		}
>  		intel_engine_pm_put(engine);
> -- 
> 2.20.1