cache policy of arm mmu

[Jacky lin]

Hi all,

I found that the cache policy in after ARMv6 is always set as writeback
mode in mmu.c.

static int __init early_cachepolicy(char *p)
{
   ...
    if (cpu_architecture() >= CPU_ARCH_ARMv6) {
        printk(KERN_WARNING "Only cachepolicy=writeback supported on ARMv6
and later\n");
        cachepolicy = CPOLICY_WRITEBACK;
    }
   ...
}

Does anyone know why and provide some documents or links for that?

Thanks so much!

Cheers,
Jacky
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20120529/6a500a59/attachment.html