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SubjectRe: [2.6.12] x86-64 IO-APIC + timer doesn't work II + PATCH
Date
Andi,

On Sunday 19 Jun 2005 00:52, Andi Kleen wrote:
[snip]
>
> It's a bit of a shot into the dark, but could you test if the following
> patch helps? The A64 is quite aggressive in reordering instructions and it
> might be breaking __delay() and cause it to return early.
>

Firstly, I apologise in the delay getting back to you.

I tried the patch, but the machine still hung in the same way with the options
apic apic=verbose (I don't know if the first "apic" is required, or whether
this is an invalid combination of parameters, but it hung in the same way).

> If not I would check what a failing case and a working case output for
>
> Calibrating delay loop... 3940.35 BogoMIPS (lpj=1970176)
>
> Does the failing kernel output something different here?

I'll get back to you about this, but see my other email (a successfully booted
apic=debug machine). Thanks for investigating this.

--
Cheers,
Alistair.

personal: alistair()devzero!co!uk
university: s0348365()sms!ed!ac!uk
student: CS/CSim Undergraduate
contact: 1F2 55 South Clerk Street,
Edinburgh. EH8 9PP.
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