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[Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough
From: |
Benoît Canet |
Subject: |
[Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough |
Date: |
Sat, 1 Jun 2013 14:13:21 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Hello,
I may have soon the PF driver of an SR-IOV card to code and make work with
QEMU/KVM so I have the following questions.
In an AMD64 setup where QEMU use VFIO to passthrough the VFs of an SR-IOV card
to a guest will the consequences of a PF FLR be handled fine by QEMU and the
guest ?
I read that pci_reset_function would call pci_restore_state restoring the SR-IOV
configuration after the reset of the PF.
The ways the hardware work means that the VFs would disappear and reappear in a
short lapse of time.
Will these events be handled by the kernel pci hotplug code ?
Given that the PF driver restore the PF config space after the reset will /sys
files used by QEMU disappear and reappear messing the QEMU VFIO passthrough or
will it goes smoothly ?
Best regards
Benoît Canet
- [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough,
Benoît Canet <=
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Alex Williamson, 2013/06/02
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Don Dutile, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Benoît Canet, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Don Dutile, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Benoît Canet, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Don Dutile, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Benoît Canet, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Don Dutile, 2013/06/03
- Re: [Qemu-devel] SR-IOV PF reset and QEMU VFs VFIO passthrough, Benoît Canet, 2013/06/04