In my host os, command of ' lspci -v -s 00:02.0' will show: Memory at e8000000 (64-bit, prefetchable) [size=128M]
Is this 128M memory called 'stolen memory'? If this IGD device is passed through into guest os, will it be deserted and wasted? Or mapped into and resused in guest os? My host os is ubuntu 18.04 with kernel 4.15.0-29-generic and qemu 2.11.1, guest os is windows 7. Output of lspci -v -s 00:02.0: root@test:/home# lspci -v -s 00:02.0 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f7800000 (64-bit, non-prefetchable) [size=4M] Memory at e8000000 (64-bit, prefetchable) [size=128M] I/O ports at f000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: vfio-pci Kernel modules: i915
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