RE: [PATCH 4/5] platform/x86/intel/ifs: Implement Array BIST test

From: Luck, Tony
Date: Wed Feb 01 2023 - 14:43:38 EST


> Why bother with a bitfield? Just do:

How much "bother" is a bitfield?

> union ifs_array {
> u64 data;
> struct {
> u32 array_bitmask;
> u16 array_bank;
> u16 flags;
> };
>};
>
> Then you only need to mask 'ctrl_result' out of flags. You don't need
> any crazy macros.

"only need" to special case this one field ... but that's extra
code for humans to read (and humans aren't good at that)
rather than the computer (compiler) which is really good at
doing this.

Using bitfields is also following the existing style of this driver.

-Tony