On Tuesday 09 May 2006 09:00, Chris Wright wrote: > Allocate/destroy a 'vmalloc' VM area: alloc_vm_area and free_vm_area > The alloc function ensures that page tables are constructed for the > region of kernel virtual address space and mapped into init_mm. > > Lock an area so that PTEs are accessible in the current address space: > lock_vm_area and unlock_vm_area > The lock function prevents context switches to a lazy mm that doesn't > have the area mapped into its page tables. It also ensures that the > page tables are mapped into the current mm by causing the page fault > handler to copy the page directory pointers from init_mm into the > current mm. Having that in drivers/xen looks wrong. It should be probably somewhere generic. -Andi
