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When pass-thru GPU to pre-launched Linux guest, need to pass GPU OpRegion to the guest. Here's the detailed steps: 1. reserve a memory region in ve820 table for GPU OpRegion 2. build EPT mapping for GPU OpRegion to pass-thru OpRegion to guest 3. emulate the pci config register for OpRegion For the third step, here's detailed description: The address of OpRegion locates on PCI config space offset 0xFC, Normal Linux guest won't write this register, so we can regard this register as read-only. When guest reads this register, return the emulated value. When guest writes this register, ignore the operation. Tracked-On: #6387 Signed-off-by: Liu,Junming <junming.liu@intel.com> |
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| .. | ||
| delay.h | ||
| efi_mmap.h | ||
| event.h | ||
| hypercall.h | ||
| irq.h | ||
| ptdev.h | ||
| schedule.h | ||
| softirq.h | ||
| ticks.h | ||
| timer.h | ||
| vm_uuids.h | ||