[SeaBIOS] [Qemu-devel] [PATCH v7 1/4] hw/pci: introduce pcie-pci-bridge device
Marcel Apfelbaum
marcel at redhat.com
Wed Sep 20 16:00:58 CEST 2017
On 20/09/2017 12:52, Aleksandr Bezzubikov wrote:
>
> ср, 20 сент. 2017 г. в 10:13, Marcel Apfelbaum <marcel at redhat.com
> <mailto:marcel at redhat.com>>:
>
> On 19/09/2017 23:34, Eduardo Habkost wrote:
> > On Fri, Aug 18, 2017 at 02:36:47AM +0300, Aleksandr Bezzubikov wrote:
> >> Introduce a new PCIExpress-to-PCI Bridge device,
> >> which is a hot-pluggable PCI Express device and
> >> supports devices hot-plug with SHPC.
> >>
> >> This device is intended to replace the DMI-to-PCI Bridge.
> >>
> >> Signed-off-by: Aleksandr Bezzubikov <zuban32s at gmail.com
> <mailto:zuban32s at gmail.com>>
> >> Reviewed-by: Marcel Apfelbaum <marcel at redhat.com
> <mailto:marcel at redhat.com>>
> >
> > It's possible to crash QEMU by instantiating this device, with;
> >
> > $ qemu-system-ppc64 -machine prep -device pcie-pci-bridge
> > qemu-system-ppc64: qemu/memory.c:1533: memory_region_finalize:
> Assertion `!mr->container' failed.
> > Aborted
>
> Hi Edurado,
>
> >
> > I didn't investigate the root cause.
> >
>
> Thanks for reporting it!
> Aleksandr, can you have a look? Maybe we should not compile
> the device for ppc arch. (x86 and arm is enough)
>
>
> I will see what can we do. Is x86 and arm really enough?
>
Well, I am being selfish, and it works for me lately :).
Seriously speaking, the new generic PCI Express
Port was restricted to x86 and arm for reasons I don't remember.
Since your work has the same scope, the restriction makes sense.
Please grep for CONFIG_PCIE_PORT to convince yourself
and to help coding it.
Thanks,
Marcel
>
>
> Appreciated,
> Marcel
>
> --
> Aleksandr Bezzubikov
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