[PATCH 1/6] drm/xe: Assert size of the struct xe_reg

[Matt Roper]

On Tue, Jan 16, 2024 at 03:56:12PM +0100, Michal Wajdeczko wrote:
> We want to keep the struct xe_reg as small as possible.
> Make sure we don't accidentally change its size.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/xe/regs/xe_reg_defs.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/regs/xe_reg_defs.h b/drivers/gpu/drm/xe/regs/xe_reg_defs.h
> index c50e7650c09a..114b07db962f 100644
> --- a/drivers/gpu/drm/xe/regs/xe_reg_defs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_reg_defs.h
> @@ -6,6 +6,8 @@
>  #ifndef _XE_REG_DEFS_H_
>  #define _XE_REG_DEFS_H_
>  
> +#include <linux/build_bug.h>
> +
>  #include "compat-i915-headers/i915_reg_defs.h"
>  
>  /**
> @@ -44,6 +46,7 @@ struct xe_reg {
>  		u32 raw;
>  	};
>  };
> +static_assert(sizeof(struct xe_reg) == sizeof(u32));
>  
>  /**
>   * struct xe_reg_mcr - MCR register definition
> -- 
> 2.25.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation