Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, 30 Apr 2018 11:58:10 +0100 Jean-Philippe Brucker wrote: > On 25/04/18 16:37, Jacob Pan wrote: > >> In the other cases (unsupported PRI or rogue guest) then disabling > >> PRI using a FAILURE status might be the right thing to do. However, > >> assuming the

Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, 30 Apr 2018 11:58:10 +0100 Jean-Philippe Brucker wrote: > On 25/04/18 16:37, Jacob Pan wrote: > >> In the other cases (unsupported PRI or rogue guest) then disabling > >> PRI using a FAILURE status might be the right thing to do. However, > >> assuming the device follows the PCI spec it

Re: [PATCH v4 14/22] iommu: handle page response timeout

On 25/04/18 16:37, Jacob Pan wrote: >> In the other cases (unsupported PRI or rogue guest) then disabling PRI >> using a FAILURE status might be the right thing to do. However, >> assuming the device follows the PCI spec it will stop sending page >> requests once there are as many PPRs in flight

Re: [PATCH v4 14/22] iommu: handle page response timeout

On 25/04/18 16:37, Jacob Pan wrote: >> In the other cases (unsupported PRI or rogue guest) then disabling PRI >> using a FAILURE status might be the right thing to do. However, >> assuming the device follows the PCI spec it will stop sending page >> requests once there are as many PPRs in flight

Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, 23 Apr 2018 16:36:23 +0100 Jean-Philippe Brucker wrote: > On Mon, Apr 16, 2018 at 10:49:03PM +0100, Jacob Pan wrote: > > When IO page faults are reported outside IOMMU subsystem, the page > > request handler may fail for various reasons. E.g. a guest

Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, 23 Apr 2018 16:36:23 +0100 Jean-Philippe Brucker wrote: > On Mon, Apr 16, 2018 at 10:49:03PM +0100, Jacob Pan wrote: > > When IO page faults are reported outside IOMMU subsystem, the page > > request handler may fail for various reasons. E.g. a guest received > > page requests but did

Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, Apr 16, 2018 at 10:49:03PM +0100, Jacob Pan wrote: > When IO page faults are reported outside IOMMU subsystem, the page > request handler may fail for various reasons. E.g. a guest received > page requests but did not have a chance to run for a long time. The > irresponsive behavior could

Re: [PATCH v4 14/22] iommu: handle page response timeout

On Mon, Apr 16, 2018 at 10:49:03PM +0100, Jacob Pan wrote: > When IO page faults are reported outside IOMMU subsystem, the page > request handler may fail for various reasons. E.g. a guest received > page requests but did not have a chance to run for a long time. The > irresponsive behavior could

[PATCH v4 14/22] iommu: handle page response timeout

When IO page faults are reported outside IOMMU subsystem, the page request handler may fail for various reasons. E.g. a guest received page requests but did not have a chance to run for a long time. The irresponsive behavior could hold off limited resources on the pending device. There can be

[PATCH v4 14/22] iommu: handle page response timeout

When IO page faults are reported outside IOMMU subsystem, the page request handler may fail for various reasons. E.g. a guest received page requests but did not have a chance to run for a long time. The irresponsive behavior could hold off limited resources on the pending device. There can be

[PATCH v4 14/22] iommu: handle page response timeout

When IO page faults are reported outside IOMMU subsystem, the page request handler may fail for various reasons. E.g. a guest received page requests but did not have a chance to run for a long time. The irresponsive behavior could hold off limited resources on the pending device. There can be

[PATCH v4 14/22] iommu: handle page response timeout

When IO page faults are reported outside IOMMU subsystem, the page request handler may fail for various reasons. E.g. a guest received page requests but did not have a chance to run for a long time. The irresponsive behavior could hold off limited resources on the pending device. There can be