[Virt] StratoVirt 内存模块增加find_flatrange函数用于重复代码归一；修正region的IoEventFd功能bug

Attachments:

• attachment.htm (text/html — 1.8 KB)
• 0002-address_space-fix-Region-s-IoEventFd-address-error.patch (application/octet-stream — 5.4 KB)
• 0001-address_space-move-find_flat_range-function-to-FlatV.PATCH (application/octet-stream — 6.7 KB)