Messages in this thread |  | | | From | "Marco Tralli" <> | | Subject | Re: kernel 2.6.23-rc6 hangs on Geode GX1 | | Date | Thu, 27 Sep 2007 18:33:45 +0200 |
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Thanks Juergen,
> It runs stable on 5 different GX1 systems. > > But I do not use a standard BIOS. I'm using LinuxBIOS instead. But I'm also using > these patches. >
set_cx86_inc was one of performance trick called by geode_configure I didn't find any documentation about "incrementor margin" before.
But since I'm running on 300MHz GX1 the default kernel is now broken for me!
> --- linux-2.6.22.orig/arch/i386/kernel/cpu/cyrix.c > +++ linux-2.6.22/arch/i386/kernel/cpu/cyrix.c > @@ -169,7 +169,7 @@ static void __cpuinit set_cx86_inc(void) > setCx86(CX86_PCR1, getCx86(CX86_PCR1) | 0x02); > /* PCR0 -- Performance Control */ > /* Incrementor Margin 10 */ > - setCx86(CX86_PCR0, getCx86(CX86_PCR0) | 0x04); > + setCx86(CX86_PCR0, getCx86(CX86_PCR0) | 0x05); /* 300MHz CPU */ > setCx86(CX86_CCR3, ccr3); /* disable MAPEN */ > } >
I will try your patch
But again, if those tricks are so system dependent I suggest to kernel people to let disable it in default configuration.
Marco
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