On Thu, Jun 12, 2008 at 03:02:31PM -0400, Pelton, Dave wrote:
> --- linux-2.6.25.4-clean/include/asm-mips/fixmap.h 2008-05-15
> 11:00:12.000000000 -0400
> +++ linux-2.6.25.4/include/asm-mips/fixmap.h 2008-06-12
> 13:21:49.042673000 -0400
> @@ -69,6 +69,8 @@ enum fixed_addresses {
> */
> #if defined(CONFIG_CPU_TX39XX) || defined(CONFIG_CPU_TX49XX)
> #define FIXADDR_TOP ((unsigned long)(long)(int)(0xff000000 -
> 0x20000))
> +#elif defined(CONFIG_CPU_BMIPS3300)
> +#define FIXADDR_TOP ((unsigned long)(long)(int)0xff200000 - 0x1000)
> #else
> #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
> #endif
>
> You will need to define CONFIG_CPU_BMIPS3300 in your config file for
> this change to be applied. I suspect that the same core is present in
> a number of Broadcom SOC designs, so this issue may exist for a number
> of different chips.
There are a few other processors such as some TX4900 family members which
use up some virtual address space without telling telling the OS. In any
case I consider that a blatant violation fo the architecture and the
kernel should be tought about these special cases.
Ralf
