Hi Alex, Lu.
Posted v2 patch, as per
https://lists.linuxfoundation.org/pipermail/iommu/2021-October/059955.html
Kindly review, and let's continue on that thread now.
Thanks and Regards,
Ajay
On Mon, Oct 11, 2021 at 11:43 PM Ajay Garg wrote:
>
> Thanks Alex for your time.
>
> I think I may
Thanks Alex for your time.
I think I may have found the issue. Right now, when doing a
dma-unmapping, we do a "soft-unmapping" only, as the pte-values
themselves are not cleared in the unlinked pagetable-frame.
I have made the (simple) changes, and things are looking good as of
now (almost an
On Mon, 11 Oct 2021 11:49:33 +0530
Ajay Garg wrote:
> The flooding was seen today again, after I booted the host-machine in
> the morning.
> Need to look what the heck is going on ...
>
> On Sun, Oct 10, 2021 at 11:45 AM Ajay Garg wrote:
> >
> > > I'll try and backtrack to the userspace
The flooding was seen today again, after I booted the host-machine in
the morning.
Need to look what the heck is going on ...
On Sun, Oct 10, 2021 at 11:45 AM Ajay Garg wrote:
>
> > I'll try and backtrack to the userspace process that is sending these
> > ioctls.
> >
>
> The userspace process
> I'll try and backtrack to the userspace process that is sending these ioctls.
>
The userspace process is qemu.
I compiled qemu from latest source, installed via "sudo make install"
on host-machine, rebooted the host-machine, and booted up the
guest-machine on the host-machine. Now, no
Thanks Alex for the reply.
Lu, Alex :
I got my diagnosis regarding the host-driver wrong, my apologies.
There is no issue with the pci-device's host-driver (confirmed by
preventing the loading of host-driver at host-bootup). Thus, nothing
to be fixed at the host-driver side.
Rather seems some
On Sat, 2 Oct 2021 22:48:24 +0530
Ajay Garg wrote:
> Thanks Lu for the reply.
>
> >
> > Isn't the domain should be switched from a default domain to an
> > unmanaged domain when the device is assigned to the guest?
> >
> > Even you want to r-setup the same mappings, you need to un-map all
> >
Thanks Lu for the reply.
>
> Isn't the domain should be switched from a default domain to an
> unmanaged domain when the device is assigned to the guest?
>
> Even you want to r-setup the same mappings, you need to un-map all
> existing mappings, right?
>
Hmm, I guess that's a (design) decision
On 2021/10/2 20:40, Ajay Garg wrote:
Taking a SD-MMC controller (over PCI) as an example, following is an
example sequencing, where the log-flooding happened :
0.
We have a host and a guest, both running latest x86_64 kernels.
1.
Host-machine is booted up (with intel_iommu=on), and the
Taking a SD-MMC controller (over PCI) as an example, following is an
example sequencing, where the log-flooding happened :
0.
We have a host and a guest, both running latest x86_64 kernels.
1.
Host-machine is booted up (with intel_iommu=on), and the DMA-PTEs
are setup for the controller (on the
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