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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