From: "Lan, Tianyu" <tianyu.lan@intel.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: aik@ozlabs.ru, amit.shah@redhat.com, anthony@codemonkey.ws,
ard.biesheuvel@linaro.org, blauwirbel@gmail.com,
cornelia.huck@de.ibm.com, eddie.dong@intel.com,
nrupal.jani@intel.com, agraf@suse.de, kvm@vger.kernel.org,
pbonzini@redhat.com, qemu-devel@nongnu.org,
emil.s.tantilov@intel.com, gerlitz.or@gmail.com,
donald.c.skidmore@intel.com, mark.d.rustad@intel.com,
mst@redhat.com, kraxel@redhat.com, lcapitulino@redhat.com,
quintela@redhat.com
Subject: Re: [RFC PATCH V2 09/10] Qemu/VFIO: Add SRIOV VF migration support
Date: Thu, 3 Dec 2015 16:56:16 +0800 [thread overview]
Message-ID: <566003B0.7030406@intel.com> (raw)
In-Reply-To: <1449095113.15753.145.camel@redhat.com>
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
>
next prev parent reply other threads:[~2015-12-03 8:57 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 13:35 [RFC PATCH V2 00/10] Qemu: Add live migration support for SRIOV NIC Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 01/10] Qemu/VFIO: Create head file pci.h to share data struct Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 02/10] Qemu/VFIO: Add new VFIO_GET_PCI_CAP_INFO ioctl cmd definition Lan Tianyu
2015-12-02 22:25 ` Alex Williamson
2015-12-03 8:40 ` Lan, Tianyu
2015-12-03 15:26 ` Alex Williamson
2015-11-24 13:35 ` [RFC PATCH V2 03/10] Qemu/VFIO: Rework vfio_std_cap_max_size() function Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 04/10] Qemu/VFIO: Add vfio_find_free_cfg_reg() to find free PCI config space regs Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 05/10] Qemu/VFIO: Expose PCI config space read/write and msix functions Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 06/10] Qemu/PCI: Add macros for faked PCI migration capability Lan Tianyu
2015-12-02 22:25 ` Alex Williamson
2015-12-03 8:57 ` Lan, Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 07/10] Qemu: Add post_load_state() to run after restoring CPU state Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 08/10] Qemu: Add save_before_stop callback to run just before stopping VCPU during migration Lan Tianyu
2015-11-24 13:35 ` [RFC PATCH V2 09/10] Qemu/VFIO: Add SRIOV VF migration support Lan Tianyu
2015-11-24 21:03 ` Michael S. Tsirkin
2015-11-25 15:32 ` Lan, Tianyu
2015-11-25 15:44 ` Michael S. Tsirkin
2015-12-02 22:25 ` Alex Williamson
2015-12-03 8:56 ` Lan, Tianyu [this message]
2015-11-24 13:35 ` [RFC PATCH V2 10/10] Qemu/VFIO: Misc change for enable migration with VFIO Lan Tianyu
2015-11-30 8:01 ` [RFC PATCH V2 00/10] Qemu: Add live migration support for SRIOV NIC Michael S. Tsirkin
2015-12-01 6:26 ` Lan, Tianyu
2015-12-01 15:02 ` Michael S. Tsirkin
2015-12-02 14:08 ` Lan, Tianyu
2015-12-02 14:31 ` Michael S. Tsirkin
2015-12-03 14:53 ` Lan, Tianyu
2015-12-04 6:42 ` Lan, Tianyu
2015-12-04 8:05 ` Michael S. Tsirkin
2015-12-04 12:11 ` Lan, Tianyu
2015-12-03 18:32 ` Alexander Duyck
2015-12-07 16:50 ` live migration vs device assignment (was Re: [RFC PATCH V2 00/10] Qemu: Add live migration support for SRIOV NIC) Michael S. Tsirkin
2015-12-09 16:26 ` live migration vs device assignment (motivation) Lan, Tianyu
2015-12-09 17:14 ` Alexander Duyck
2015-12-10 3:15 ` Lan, Tianyu
2015-12-09 20:07 ` Michael S. Tsirkin
2015-12-10 3:04 ` Lan, Tianyu
2015-12-10 8:38 ` Michael S. Tsirkin
2015-12-10 14:23 ` Lan, Tianyu
2015-12-10 10:18 ` [Qemu-devel] " Dr. David Alan Gilbert
2015-12-10 11:28 ` Yang Zhang
2015-12-10 11:41 ` Dr. David Alan Gilbert
2015-12-10 13:07 ` Yang Zhang
2015-12-10 14:38 ` Lan, Tianyu
2015-12-10 16:11 ` [Qemu-devel] " Michael S. Tsirkin
2015-12-10 19:17 ` Alexander Duyck
2015-12-11 7:32 ` Lan, Tianyu
2015-12-14 9:12 ` Michael S. Tsirkin
2015-12-10 16:23 ` Dr. David Alan Gilbert
2015-12-10 17:16 ` Alexander Duyck
2015-12-13 15:47 ` Lan, Tianyu
2015-12-13 19:30 ` Alexander Duyck
2015-12-25 7:03 ` Lan Tianyu
2015-12-25 12:11 ` [Qemu-devel] " Michael S. Tsirkin
2015-12-28 17:42 ` Lan, Tianyu
2015-12-29 16:46 ` Michael S. Tsirkin
2015-12-29 17:04 ` Alexander Duyck
2015-12-29 17:15 ` Michael S. Tsirkin
2015-12-29 18:04 ` [Qemu-devel] " Alexander Duyck
2016-01-04 2:15 ` Lan Tianyu
2015-12-25 22:31 ` Alexander Duyck
2015-12-27 9:21 ` Michael S. Tsirkin
2015-12-27 21:45 ` [Qemu-devel] " Alexander Duyck
2015-12-28 8:51 ` Michael S. Tsirkin
2015-12-28 3:20 ` Dong, Eddie
2015-12-28 4:26 ` Alexander Duyck
2015-12-28 11:50 ` [Qemu-devel] " Michael S. Tsirkin
2015-12-14 9:26 ` Michael S. Tsirkin
2015-12-28 8:52 ` Pavel Fedin
2015-12-28 11:51 ` Michael S. Tsirkin
2016-03-17 9:15 ` [Qemu-devel] [RFC PATCH V2 00/10] Qemu: Add live migration support for SRIOV NIC Wei Yang
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