On 2 Apr 2005, at 02:47, Jacob Gorm Hansen wrote:
> now that Xen has writable page tables, I was wondering if there is any
> real need for the linear page tables in Xen? It seems some of the
> drivers still use them, but I imagine they could use the regular
> mmu_updates just as efficiently. Am I wrong?
We use update_va_mapping() on demand fault paths as well, where it
avoids us having to map_domain_mem() the pte in Xen. This would be less
of an advantage on x86_64 where we''ll have a 1:1 mapping of all memory
anyway: but in that case linear address space is not so scarce. :-)
- Keir
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel