hi all, I almost done to run linux in kseg2. But I noticed a bug related to the cache that I can't explain. Maybe you'll have an idea... I configured kseg2 to map kernel space, and to be "uncached". So when accessing kernel space, virtual addr > 0xc0000000, I don't use both icache and dcache. When kernel maps a user page in user space, it uses data cache. In this scenario, some kernel data are corrupted. But when I map kernel space and activate caches to access it, it seems to work. Thanks in advance. Francis. Découvrez le nouveau Yahoo! Mail : 250 Mo d'espace de stockage pour vos mails ! Créez votre Yahoo! Mail sur http://fr.mail.yahoo.com/