Re: lug-bg: "spurious 8259A interrupt: IRQ7" (was: Re:)

[sheib@xxxxxxxxxxxxxxxxx (sheib)]

On Tue, 30 Jul 2002, George Danchev wrote:

> On Tuesday 30 July 2002 10:54, Daniel Duraliyski wrote:
> > iskam da popitam dali nqkoj znae zashto se polu4awa
> > towa syobshtenie na konsole i w /mesages
> > "spurious 8259A interrupt: IRQ7"
> > kernela e 2.4.19rc1, 4ipseta e via kt133a
> > syobshtenieto se polu4awashe i pri po ranni versii na
> > kernela. Ima edno izklu4enie samo w 2.4.18pr8 go
> > nqmashe towa. Znam 4e na towa prekyswane e paralelniq
> > port. Hadruerni promeni i promeni w biosa ne sa
> > prawqni pri razli4nite  qdra i towa syshtestwuwa pri
> > drugi makri dyna sys syshtiq 4ipset
> 

dosta chesto se sreshta pri mobos na via, v tova chislo i pri men
(kt266)

> v takiva situacii napravo podavash syobstenieto na google bez da se 
> zamislqsh;-) . po-skoraq pomost ot tova nema ;-) (see googlizer)
> 
> ta nakratko, nema losho s tozi message. 
> 
> h/w problem s 8259 controler-a:

:-)

tova ne e h/w problem (vij kakvo znachi "spuriouis"), sledovatelno 
ne se nujdae ot reshavane. po-skoro e nasty `undocumented feature', 
kakto obichat da kazvat edni fellows ot redmond za 1/2-ta ot bugovete 
si. ta, mojesh da spresh syobshtenieto, no ne e dobra ideia (nikak)
da spirash featura. irq7 obiknoveno se polza ot parallel porta ti, 
kakto si zabeliazal -  i.e. printer, a ako niama instaliran driver 
vijdash tova syobshtenie.

mojesh da prochetesh poveche ot tuk: 

linux-source/arch/i386/kernel/i8259.c

> 
> eventualno s/w reshenie - see thread:
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0111.3/0864.html
> ili opitaj da zakompilirash v kernel-a CONFIG_X86_UP_IOAPIC, demek 
> APIC and IO-APIC support on uniprocessors. Ako beshe s SMP machina ste e 
> vklu4eno po default. 
> 

irq7 se assertva kogato PIC-a vidi interrupt, no ne vijda koi go syzdava 
-> annoying message. mojesh da bootvash s `noapic' v kernel command line-a 
ako mnogo te trevoji, bez da ima nujda ot rekompilacii.

/s  

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