Thanks! Is the entry "intel_iommu=off" still needed for x86_64 targets?
Best regards Jan. Jan Kiszka <[email protected]> schrieb am Do., 3. Sep. 2020, 19:01: > On 03.09.20 15:07, Jan-Marc Stranz wrote: > > Hi Jan! > > > > I've moved to another target with "Intel Core i7-8559U". > > This CPU supports "VT-x" and "VT-d". > > > > Doing a hardware check I get the following messages: > > > > Feature Availability > > ------------------------------ ------------------ > > Number of CPUs > 1 ok > > Long mode ok > > Traceback (most recent call last): > > File "/usr/libexec/jailhouse/jailhouse-hardware-check", line 147, in > > <module> > > iommu, _ = sysfs_parser.parse_dmar(pci_devices, ioapics, > dmar_regions) > > File "/usr/lib/python3.7/site-packages/pyjailhouse/sysfs_parser.py", > > line 377, in parse_dmar > > raise RuntimeError('DMAR region size cannot be identified.\n' > > RuntimeError: DMAR region size cannot be identified. > > Target Linux must run with Intel IOMMU enabled. > > > > I'm using Linux Kernel 5.4.61 with the patches and config options from > > "jailhouse.cfg". > > > > The kernel command line contains "intel_iommu=off" (as specified under > > "Software requirements" at https://github.com/siemens/jailhouse). > > I've also tried "intel_iommu=on" but without success. > > > > What is the reason for this again? > > I could be that your kernel does not support what is needed to check the > hardware. It may still be fine to run Jailhouse. Do not invest too much > into the checker - or use a regular distro kernel for the check (which > may also partially fail these days due to CONFIG_STRICT_DEVMEM). > > > It's very difficult (at least for me) to get jailhouse up and running. > > Focus on the configuration, not the checking. In fact, the checker has a > decreasing value because (x86) hardware shipped in 2020 has all features > we need, practically always. > > Jan > > -- > Siemens AG, Corporate Technology, CT RDA IOT SES-DE > Corporate Competence Center Embedded Linux > -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/CAOOGbpg5t1ykh1OaS_rKXMzfL2u9F%2BigLuoA3wSg4boAhxtuWQ%40mail.gmail.com.
