Re: [PATCH v4 01/17] x86/mpx: Do not use SIB index if index points to R/ESP
From: Peter Zijlstra
Date: Thu Feb 23 2017 - 02:25:27 EST
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.