* Henning Schild <[email protected]> [2017-08-22 13:42:22 +0000]:

> Am Mon, 21 Aug 2017 18:13:35 -0700
> schrieb Gustavo Lima Chaves <[email protected]>:
> 
> > Hi,
> > 
> > is testing xAPIC mode just a matter of having
> > 
> > diff --git a/configs/qemu-vm.c b/configs/qemu-vm.c
> > index e5a420a..6225be9 100644
> > --- a/configs/qemu-vm.c
> > +++ b/configs/qemu-vm.c
> > @@ -49,6 +49,7 @@ struct {
> >                         .pci_mmconfig_end_bus = 0xff,
> >                         .x86 = {
> >                                 .pm_timer_address = 0x608,
> > +                                .apic_mode =
> > JAILHOUSE_APIC_MODE_XAPIC, .vtd_interrupt_limit = 256,
> >                                 .iommu_units = {
> >                                         {
> > 
> > ? If so, it gives me a segv right away, with
> > 
> > Initializing Jailhouse hypervisor v0.7 (36-g0b1b884-dirty) on CPU 3
> > Code location: 0xfffffffff0000060
> > Using xAPIC
> > Page pool usage after early setup: mem 44/1480, remap 65/131072
> > Initializing processors:
> >  CPU 3... (APIC ID 0) FAILED
> > 
> > as output.
> > 
> > Has anyone been testing that?
> 
> Just talked to Andreas, he booted his root Linux in xapic mode to
> inherit that for the non-root cell. Just add "nox2apic" to your host
> Linux parameters.

Interesting, because my issue was at jailhouse enable time, I did not
even enter the merit of which inmate payload was used. But I'll check
better what's happening, if the .apic_mode = 1 approach is really all
that is needed.

Regards,

> 
> Henning
> 
> > Regards,
> > 
> 

-- 
Gustavo Lima Chaves
Intel - Open Source Technology Center

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