Hi all,
I'm using a KVM/Qemu nested SVM setup to debug another hypervisor
(Jailhouse) I contribute to. IOW, the scheme is: AMD64 Linux host
running [paravirtualized] AMD64 Linux guest (the same kernel as the
host) running Jailhouse.
Jailhouse, in turn, uses Nested Paging to virtualize xAPIC: APIC page
(0xfee00000, no APIC remapping) is mapped read-only into Jailhouse's
guests. This of course implies that APIC page appears to Jailhouse
guests as uncacheable (UC).
Is it achievable in the setup I described, or do I need to run my code
on a real hardware to make the APIC page accesses in Jailhouse guests
uncacheable?
Thanks in advance.
--
Best regards,
Valentine Sinitsyn
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