> I think the bug may be in flush_user_cache_page_non_current. It hijacks > sr3 temporarily and I don't think cr8 is updated when this is done. The > switch may need to be atomic. The following might fix the protection ID bug. --- cache.c.orig 2008-07-17 21:24:46.000000000 -0400 +++ cache.c 2008-12-21 11:53:54.000000000 -0500 @@ -312,14 +312,14 @@ /* make us current */ mtctl(__pa(vma->vm_mm->pgd), 25); - mtsp(vma->vm_mm->context, 3); + load_context(vma->vm_mm->context); flush_user_dcache_page(vmaddr); if(vma->vm_flags & VM_EXEC) flush_user_icache_page(vmaddr); /* put the old current process back */ - mtsp(space, 3); + load_context(space); mtctl(pgd, 25); preempt_enable(); } Dave -- J. David Anglin dave.anglin@xxxxxxxxxxxxxx National Research Council of Canada (613) 990-0752 (FAX: 952-6602) -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
