Re: [PATCH v4 01/17] x86/common: Align cpu_caps_cleared and cpu_caps_set to unsigned long

Peter Zijlstra
2019-03-04T10:17:36Z

On Mon, Mar 04, 2019 at 09:33:16AM +0100, Paolo Bonzini wrote:
> Why not instead change set_bit/clear_bit to use btsl/btrl instead of
> btsq/btrq?

At least one of the faulty users (wireless) is in generic code and needs
fixing regardless.

For better or worse; the bitmap stuff is defined to work on unsigned
long. Using it on smaller types already relies on small endian; but
further enabling just makes it worse I feel. Better have the rules be
uniform.