On Thu, 12 Mar 2020 15:14:06 +1100
Alexey Kardashevskiy wrote:
>
>
> On 10/03/2020 21:43, Greg Kurz wrote:
> > On Thu, 5 Mar 2020 12:59:03 +0100
> > Greg Kurz wrote:
> >
> >> On Thu, 5 Mar 2020 15:30:09 +1100
> >> David Gibson wrote:
> >>
> >>> Traditionally, virtio devices don't do DMA by
On 10/03/2020 21:43, Greg Kurz wrote:
> On Thu, 5 Mar 2020 12:59:03 +0100
> Greg Kurz wrote:
>
>> On Thu, 5 Mar 2020 15:30:09 +1100
>> David Gibson wrote:
>>
>>> Traditionally, virtio devices don't do DMA by the usual path on the
>>> guest platform. In particular they usually bypass any vir
On Thu, 5 Mar 2020 12:59:03 +0100
Greg Kurz wrote:
> On Thu, 5 Mar 2020 15:30:09 +1100
> David Gibson wrote:
>
> > Traditionally, virtio devices don't do DMA by the usual path on the
> > guest platform. In particular they usually bypass any virtual IOMMU
> > the guest has, using hypervisor ma
On Thu, 5 Mar 2020 15:30:09 +1100
David Gibson wrote:
> Traditionally, virtio devices don't do DMA by the usual path on the
> guest platform. In particular they usually bypass any virtual IOMMU
> the guest has, using hypervisor magic to access untranslated guest
> physical addresses.
>
> There
Traditionally, virtio devices don't do DMA by the usual path on the
guest platform. In particular they usually bypass any virtual IOMMU
the guest has, using hypervisor magic to access untranslated guest
physical addresses.
There's now the optional iommu_platform flag which can tell virtio
devices
Traditionally, virtio devices don't do DMA by the usual path on the
guest platform. In particular they usually bypass any virtual IOMMU
the guest has, using hypervisor magic to access untranslated guest
physical addresses.
There's now the optional iommu_platform flag which can tell virtio
devices
On Fri, Feb 07, 2020 at 03:30:55PM +1100, David Gibson wrote:
> Traditionally, virtio devices don't do DMA by the usual path on the
> guest platform. In particular they usually bypass any virtual IOMMU
> the guest has, using hypervisor magic to access untranslated guest
> physical addresses.
>
>
Traditionally, virtio devices don't do DMA by the usual path on the
guest platform. In particular they usually bypass any virtual IOMMU
the guest has, using hypervisor magic to access untranslated guest
physical addresses.
There's now the optional iommu_platform flag which can tell virtio
devices
On 14/11/2019 19:42, Michael S. Tsirkin wrote:
> On Thu, Nov 14, 2019 at 09:58:47AM +1100, Alexey Kardashevskiy wrote:
>>
>>
>> On 13/11/2019 21:00, Michael S. Tsirkin wrote:
>>> On Wed, Nov 13, 2019 at 03:44:28PM +1100, Alexey Kardashevskiy wrote:
On 12/11/2019 18:08, Michael S.
On Thu, Nov 14, 2019 at 09:58:47AM +1100, Alexey Kardashevskiy wrote:
>
>
> On 13/11/2019 21:00, Michael S. Tsirkin wrote:
> > On Wed, Nov 13, 2019 at 03:44:28PM +1100, Alexey Kardashevskiy wrote:
> >>
> >>
> >> On 12/11/2019 18:08, Michael S. Tsirkin wrote:
> >>> On Tue, Nov 12, 2019 at 02:53:49
On 13/11/2019 21:00, Michael S. Tsirkin wrote:
> On Wed, Nov 13, 2019 at 03:44:28PM +1100, Alexey Kardashevskiy wrote:
>>
>>
>> On 12/11/2019 18:08, Michael S. Tsirkin wrote:
>>> On Tue, Nov 12, 2019 at 02:53:49PM +1100, Alexey Kardashevskiy wrote:
Hi!
I am enabling IOMMU for virt
On Wed, Nov 13, 2019 at 03:44:28PM +1100, Alexey Kardashevskiy wrote:
>
>
> On 12/11/2019 18:08, Michael S. Tsirkin wrote:
> > On Tue, Nov 12, 2019 at 02:53:49PM +1100, Alexey Kardashevskiy wrote:
> >> Hi!
> >>
> >> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
> >> pro
On 13/11/2019 17:23, Alexey Kardashevskiy wrote:
>
>
> On 13/11/2019 16:54, Michael Roth wrote:
>> Quoting Alexey Kardashevskiy (2019-11-11 21:53:49)
>>> Hi!
>>>
>>> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
>>> problems, one of them is SLOF does SCSI bus scan, t
On 13/11/2019 16:54, Michael Roth wrote:
> Quoting Alexey Kardashevskiy (2019-11-11 21:53:49)
>> Hi!
>>
>> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
>> problems, one of them is SLOF does SCSI bus scan, then it stops the
>> virtio-scsi by clearing MMIO|IO|BUSMASTER
Quoting Alexey Kardashevskiy (2019-11-11 21:53:49)
> Hi!
>
> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
> problems, one of them is SLOF does SCSI bus scan, then it stops the
> virtio-scsi by clearing MMIO|IO|BUSMASTER from PCI_COMMAND (as SLOF
> stopped using the devi
On 12/11/2019 20:06, Laszlo Ersek wrote:
> On 11/12/19 04:53, Alexey Kardashevskiy wrote:
>> Hi!
>>
>> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
>> problems, one of them is SLOF does SCSI bus scan, then it stops the
>> virtio-scsi by clearing MMIO|IO|BUSMASTER from
On 12/11/2019 18:08, Michael S. Tsirkin wrote:
> On Tue, Nov 12, 2019 at 02:53:49PM +1100, Alexey Kardashevskiy wrote:
>> Hi!
>>
>> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
>> problems, one of them is SLOF does SCSI bus scan, then it stops the
>> virtio-scsi by cl
On 11/12/19 04:53, Alexey Kardashevskiy wrote:
> Hi!
>
> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
> problems, one of them is SLOF does SCSI bus scan, then it stops the
> virtio-scsi by clearing MMIO|IO|BUSMASTER from PCI_COMMAND (as SLOF
> stopped using the devices)
On Tue, Nov 12, 2019 at 02:53:49PM +1100, Alexey Kardashevskiy wrote:
> Hi!
>
> I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
> problems, one of them is SLOF does SCSI bus scan, then it stops the
> virtio-scsi by clearing MMIO|IO|BUSMASTER from PCI_COMMAND (as SLOF
> sto
Hi!
I am enabling IOMMU for virtio in the pseries firmware (SLOF) and seeing
problems, one of them is SLOF does SCSI bus scan, then it stops the
virtio-scsi by clearing MMIO|IO|BUSMASTER from PCI_COMMAND (as SLOF
stopped using the devices) and when this happens, I see unassigned
memory access (see
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