Hi,
it seems recent kernel configs on distros (at least mine, on Fedora), come with
CONFIG_STRICT_DEVMEM=y, what seems the cause of the following output:
Feature Availability
------------------------------ ------------------
Number of CPUs > 1 ok
Long mode ok
x2APIC ok
VT-x (VMX) ok
VMX without TXT ok
IA32_TRUE_*_CLTS ok
NMI exiting ok
Preemption timer ok
I/O bitmap ok
MSR bitmap ok
Secondary controls ok
Optional CR3 interception ok
Virtualize APIC access ok
RDTSCP ok
Unrestricted guest ok
EPT ok
4-level page walk ok
EPTP write-back ok
2M pages ok
1G pages ok
INVEPT ok
Single or all-context ok
VM-exit save IA32_PAT ok
VM-exit load IA32_PAT ok
VM-exit save IA32_EFER ok
VM-exit load IA32_EFER ok
VM-entry load IA32_PAT ok
VM-entry load IA32_EFER ok
Activity state HLT ok
VT-d (IOMMU #0) ok
Traceback (most recent call last):
File "./tools/jailhouse-hardware-check", line 236, in <module>
mmio = MMIO(iommu[n].base, iommu[n].size)
File "./tools/jailhouse-hardware-check", line 97, in __init__
offset=base)
mmap.error: [Errno 1] Operation not permitted
Any hints on how to surpass that without having to recompile kernels?
Regards
--
Gustavo Lima Chaves
Intel - Open Source Technology Center
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