Hi Kevin. Thanks for your comments. I will give it a try unless someone gives it a try.
On Mon, Feb 20, 2006 at 11:35:02PM +0800, Tian, Kevin wrote: > - "alt itlb miss by a guest must be handled" > Dom0 runs from the very start with vhpt enabled in all regions. There > should be no alt itlb miss raised from dom0. I thought that dom0 alt itlb miss was intentional because of the explicit region register initial values. It is inconsistent that only dom0 boot time is special. I agree that it is reasonable to modify dom0 start up environment. > * Why did you only handle cacheable (meant 0xf000....) area by identity > mapping, whole leaving uncacheable (meant 0xe8000...) area to page_fault? > That would low down the performance a lot. Misses on the uncacheable area is handled. page_fault() and ia64_do_page_fault() doesn't handle misses on the area. If it wasn't handled by dltb miss handler, misses on the area would result in dtlb miss/rfi infinite loop. -- yamahata _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
