Avi Kivity wrote:
Sorry for the delay. Here you go:
Page Tables:
pte4: 0000000002403007 pte3: 0000000002404007 pte2: 0000000000000183
These are all correct.
The only thing I can think of, is that MAXPHYADDR is small value. And
indeed, if I run it on an ept capable machine (which does the check in
hardware, not software), I get
IO error: OUT port=cf8, size=4, count=1
KVM exit reason: 2 ("KVM_EXIT_IO")
Registers:
rip: ffffffff813a0d8f rsp: ffffffff8167bdf8 flags: 0000000000000086
rax: 000000008000c300 rbx: 000000000000c000 rcx: 0000000000000000
rdx: 0000000000000cf8 rsi: 0000000000000018 rdi: 0000000000000000
rbp: ffffffff8167be08 r8: 0000000000000000 r9: 0000000000000000
r10: 0000000000000006 r11: 00000000bbceeb20 r12: 0000000000000000
r13: 0000000000000000 r14: 0000000000000000 r15: 0000000000000000
cr0: 0000000080050033 cr2: 0000000000000000 cr3: 0000000001001000
cr4: 00000000000000a0 cr8: 0000000000000000
So the guest is in long mode, happily trying to access pci config space.
MAXPHYADDR comes from cpuid 80000008.eax[0:7]. Typical values are 36-40
(number of physical address bits supported by the processor). What
value does your guest see?
Ah, nice catch! The host cpuid doesn't seem to support 80000008 at so I
didn't set it up in the guest either. I now added dummy emulation for it
and the triple fault is fixed.
Thanks Avi!
Pekka
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