1. about Invalid PCI MMCONFIG write, device 02:00:0, reg:110, size:4"
I don't know why show this when use original .c configuration.
After I added this, it doesn't show error. I don't know why.
{
.phys_start = 0xb0000000,//mmconfig
.virt_start = 0xb0000000,
.size = 0x10000000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE,
},
2. about qemu version
The qemu on ubuntu 18.04 default is 2.11.1 ， it run failed. The network
card e1000e will go down after ifup eth1.
I change to qemu-6.0.0 , it sucess. Maybe qemu-4.2.1 is also ok.
在2021年6月1日星期二 UTC+8 上午1:49:08<[email protected]> 写道：
> On 31.05.21 07:00, along li wrote:
> > When I run qemu demo. try to partition pci device into inmate.
> > I failed.
> >
> > After some lone time trying , I sucess.
> > The PCI device e1000e is partitioned into inmate and ping sucess in
> > inmate.
> > what the defference is:
> > 1. I add this into root.c(qemu-x86.c) and qemu-linux-demo.c
> > {
> > .phys_start = 0xb0000000,//mmconfig
> > .virt_start = 0xb0000000,
> > .size = 0x10000000,
> > .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE,
> > },
>
> This is wrong, "jailhouse config check" should also complain. You will
> eventually loose interrupts or get even worse behaviour.
>
> > or It will show "Invalid PCI MMCONFIG write, device 02:00:0, reg:110,
> > size:4"
> >
>
> You need to address the root cause: The guest tries to access a PCI
> config registers, likely related to PCI capability that has no write
> permission in your config yet. See also the good-old Jailhouse tutorial.
>
> >
> > 2. use qemu-6.0 to run the qemu demo.
> > When use qemu -2..11.1 to run the demo the network card cann't run
> sucess.
> > It turns off after I turn on it use ifconfig up command.
> >
> > well, may it help someone. whe to try the qemu demo for pci partition.
> >
>
> I'm on 4.2.1 to 6.0 here, those seem to have no issue with changing
> resource layout. Possibly, we have to lift the lower version boundary by
> now, though.
>
> Can you be more specific in regards to what didn't work? Did you try to
> compare if /proc/iomem in the root cell is comparable across those qemu
> versions?
>
> Jan
>
> --
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
>
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