Re: [PATCH] x86/cpu: Move identify_cpu_without_cpuid() into main branch

[Nikolay Borisov]

On 10.06.24 г. 17:03 ч., Thomas Gleixner wrote:
> On Tue, May 21 2024 at 15:48, Nikolay Borisov wrote:
> > No point in duplicating if (!have_cpuid_p()) check. Simply move
> > identify_cpu_without_cpuid() into the else branch. No functional
> > changes.
>
> You wish :)
>
> > Signed-off-by: Nikolay Borisov <nik.borisov@xxxxxxxx>
> > ---
> >   arch/x86/kernel/cpu/common.c | 4 +---
> >   1 file changed, 1 insertion(+), 3 deletions(-)
> >
> > diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
> > index 2b170da84f97..69265c0acaea 100644
> > --- a/arch/x86/kernel/cpu/common.c
> > +++ b/arch/x86/kernel/cpu/common.c
> > @@ -1578,9 +1578,6 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
> >   	memset(&c->x86_capability, 0, sizeof(c->x86_capability));
> >   	c->extended_cpuid_level = 0;
> >   
> > -	if (!have_cpuid_p())
> > -		identify_cpu_without_cpuid(c);
> > -
>
> You might look what identify_cpu_without_cpuid() does and how the
> comment right here might be related:

Doh, fair enough. OTOH is Cyrix still relevant? Google says Defunct: 
November 11, 1997; 26 years ago


> >   	/* cyrix could have cpuid enabled via c_identify()*/
> >   	if (have_cpuid_p()) {
>
> Thanks,
>
>          tglx