Re: [PATCH v2 2/3] x86/cpu/intel: Simplify F00F bug notice using pr_notice_once()

From: Maciej W. Rozycki

Date: Wed May 27 2026 - 12:21:27 EST


On Wed, 27 May 2026, H. Peter Anvin wrote:

> >> If full precision is enabled there are a whole lot of horrid corner cases.
> >> Mostly due to correctly generating the FP signals when the 80bit return
> >> value from a function is written to a 64bit 'double'.
> >
> > No IEEE quad for `long double' still, not even on 64-bit hw? Weird.
>
> The ABI was designed in 2003 or so...

Hmm, usually it's hardware that gets features first with software to
follow. For instance by now the POWER port has gained three `long double'
formats in their psABI, all of which can coexist in a single system (I got
that covered in the course of the glibc test improvement effort too).

Maciej