On 05/11/15 at 05:52pm, Li, Zhen-Hua wrote: > Add some functions to copy the data from old kernel. > These functions are used to copy context tables and page tables. > > To avoid calling iounmap between spin_lock_irqsave and spin_unlock_irqrestore, > use a link here, store the pointers , and then use iounmap to free them in > another place. Hi Zhenhua, I remember you mentioned iounmap will cause error inside spin_lock_irqsave. Do you know why it happened now? And could you also describe why avoid calling iounmap between spin_lock_irqsave/unlock_irqsave is needed here and what's the status now? I think other reviewer may want to know it too. Thanks Baoquan
