Thanks!  The cause of the bug is that the MMIO address is not page aligned!

在2021年10月14日星期四 UTC+8 17:59:56<[email protected]> 写道:

> On 01.10.21 18:40, jiajun huang wrote:
> > Dear Jailhouse community,
> > 
> > I am currently running into an issue when trying boot jailhouse on QEMU.
> > I follow the guidelines on
> > https://github.com/siemens/jailhouse/tree/wip/kvm. When I use the
> > sysconfig.c created by "jailhouse config create -c ttyS0 --mem-hv 128M
> > --mem-inmates 1536M configs/x86/sysconfig.c" to enable root cell, the
> > issue "FATAL: Invalid PIO read, port: 5658 size: 4" and "FATAL: Invalid
> > MMIO/RAM read" happened. I solved these issues with the help of
> > 
> https://events.static.linuxfound.org/sites/events/files/slides/ELCE2016-Jailhouse-Tutorial.pdf
> .
> > Attached is the modified sysconfig.c file. However, the root cell will
> > still crash with no log a few minutes later. 
> > 
> > Initializing Jailhouse hypervisor v0.12 (5-g06ba27d-dirty) on CPU 0
> > Code location: 0xfffffffff0000050
> > Using x2APIC
> > Page pool usage after early setup: mem 108/32207, remap 0/131072
> > Initializing processors:
> >  CPU 0... (APIC ID 0) OK
> >  CPU 1... (APIC ID 1) OK
> >  CPU 3... (APIC ID 3) OK
> >  CPU 2... (APIC ID 2) OK
> > Initializing unit: VT-d
> > DMAR unit @0xfed90000/0x1000
> > Reserving 24 interrupt(s) for device ff:00.0 at index 0
> > Initializing unit: IOAPIC
> > Initializing unit: Cache Allocation Technology
> > Initializing unit: PCI
> > Adding PCI device 00:00.0 to cell "RootCell"
> > Adding PCI device 00:01.0 to cell "RootCell"
> > Adding PCI device 00:02.0 to cell "RootCell"
> > Reserving 5 interrupt(s) for device 00:02.0 at index 24
> > Adding PCI device 00:1b.0 to cell "RootCell"
> > Reserving 1 interrupt(s) for device 00:1b.0 at index 29
> > Adding PCI device 00:1f.0 to cell "RootCell"
> > Adding PCI device 00:1f.2 to cell "RootCell"
> > Reserving 1 interrupt(s) for device 00:1f.2 at index 30
> > Adding PCI device 00:1f.3 to cell "RootCell"
> > Page pool usage after late setup: mem 333/32207, remap 65542/131072
> > Activating hypervisor
> > 
> > 
> > I want to know if I need to add all the missing PCI memory regions and
> > PCI IO ports to sysconfig.c according to the results of /proc/iomem and
> > /proc/ioports?
>
> Did you see configs/x86/qemu-x86.c already? That is supposed to work for
> the recommended command line and also the start-qemu.sh script from
> jailhouse-images. There are likely some subtle differences to the config
> the generator spits out, unfortunately. I haven't tried "config create"
> on QEMU in a long while, simply because we have a reference config, but
> maybe there is something that could be improved once you found the
> relevant differences.
>
> Jan
>
> -- 
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
>

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