Re: [RFC PATCH V2 09/10] Qemu/VFIO: Add SRIOV VF migration support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 12/3/2015 6:25 AM, Alex Williamson wrote:
On Tue, 2015-11-24 at 21:35 +0800, Lan Tianyu wrote:
This patch is to add SRIOV VF migration support.
Create new device type "vfio-sriov" and add faked PCI migration capability
to the type device.

The purpose of the new capability
1) sync migration status with VF driver in the VM
2) Get mailbox irq vector to notify VF driver during migration.
3) Provide a way to control injecting irq or not.

Qemu will migrate PCI configure space regs and MSIX config for VF.
Inject mailbox irq at last stage of migration to notify VF about
migration event and wait VF driver ready for migration. VF driver
writeS PCI config reg PCI_VF_MIGRATION_VF_STATUS in the new cap table
to tell Qemu.

What makes this sr-iov specific?  Why wouldn't we simply extend vfio-pci
with a migration=on feature?  Thanks,

Sounds reasonable and will update it.


Alex

--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux