Re: [Xen-devel] [PATCH] hw/xen: Set emu_mask for igd_opregion register

2017-07-10 Thread Anthony PERARD
On Fri, Jul 07, 2017 at 12:07:58PM +0800, Xiong Zhang wrote: > In igd passthrough environment, guest could only access opregion at the > first bootup time. Once guest shutdown, later guest couldn't access > opregion anymore. > This is because qemu set emulated guest opregion base address to host >

[Xen-devel] [PATCH] hw/xen: Set emu_mask for igd_opregion register

2017-07-07 Thread Xiong Zhang
In igd passthrough environment, guest could only access opregion at the first bootup time. Once guest shutdown, later guest couldn't access opregion anymore. This is because qemu set emulated guest opregion base address to host register. Later guest get a wrong host opregion base address, and coul