On Tue, May 16, 2023 at 02:35:21PM +, Shameerali Kolothum Thodi wrote:
> Ok. Got it. So it depends on what SMMU does for that mapping and is not
> related to migration per se and has the potential to crash the system if
> SMMU go ahead with that memory access. Isn't it a more generic problem
kin ;
> Cornelia Huck ; Paolo Bonzini
> ; Vladimir Sementsov-Ogievskiy
> ; Cédric Le Goater ; Yishai
> Hadas ; Maor Gottlieb ; Kirti
> Wankhede ; Tarun Gupta ;
> Joao Martins
> Subject: Re: [PATCH v11 05/11] vfio/migration: Block multiple devices
> migration
>
> On Tu
> > Williamson ; Juan Quintela
> > ; Dr. David Alan Gilbert ;
> > Michael S. Tsirkin ; Cornelia Huck ;
> > Paolo Bonzini ; Vladimir Sementsov-Ogievskiy
> > ; Cédric Le Goater ; Yishai
> > Hadas ; Maor Gottlieb ; Kirti
> > Wankhede ; Tarun Gupta ;
> > J
On Tue, May 16, 2023 at 01:57:22PM +, Shameerali Kolothum Thodi wrote:
> > What happens on your platform if a guest tries to do P2P? Does the
> > platform crash?
>
> I am not sure. Since the devices are behind SMMU, I was under the assumption
> that we do have the guarantee of isolation here(
Cornelia Huck ;
> Paolo Bonzini ; Vladimir Sementsov-Ogievskiy
> ; Cédric Le Goater ; Yishai
> Hadas ; Maor Gottlieb ; Kirti
> Wankhede ; Tarun Gupta ;
> Joao Martins
> Subject: Re: [PATCH v11 05/11] vfio/migration: Block multiple devices
> migration
>
> On Tue, May 16,
On Tue, May 16, 2023 at 10:03:54AM +, Shameerali Kolothum Thodi wrote:
> > Currently VFIO migration doesn't implement some kind of intermediate
> > quiescent state in which P2P DMAs are quiesced before stopping or
> > running the device. This can cause problems in multi-device migration
> > wh
> -Original Message-
> From:
> qemu-devel-bounces+shameerali.kolothum.thodi=huawei@nongnu.org
> [mailto:qemu-devel-bounces+shameerali.kolothum.thodi=huawei.com@nong
> nu.org] On Behalf Of Avihai Horon
> Sent: 16 February 2023 14:36
> To: qemu-devel@nongnu.org
> Cc: Alex Williamson ; J
