Re: [PATCH v4 01/17] x86/mpx: Do not use SIB index if index points to R/ESP

[Peter Zijlstra]

On Wed, Feb 22, 2017 at 10:36:50PM -0800, Ricardo Neri wrote:
> +			/*
> +			 * A negative offset generally means a error, except
> +			 * -EDOM, which means that the contents of the register
> +			 * should not be used as index.
> +			 */
>       	if (indx_offset < 0)
> -				goto out_err;
> +				if (indx_offset == -EDOM)
> +					indx = 0;
> +				else
> +					goto out_err;
> +			else
> +				indx = regs_get_register(regs, indx_offset);

Kernel coding style requires more brackets than are strictly required by
C, any block longer than 1 line needs then. Also, if one leg of a
conditional needs them, then they should be on both legs.

Your code has many such instances, please change them all.