On 25.02.22 15:29, Ralf Ramsauer wrote: > GICv3s in recent QEMU versions have ITS (Interrupt Translation Service) > enabled by default, which Linux will make use of. We will crash when > trying to re-assigning a CPU back to the root cell, as the root > cell's Linux will try to access ITS regions when powering up a CPU. > > As we don't support ITS in Jailhouse, disable ITS for the moment. > > Signed-off-by: Ralf Ramsauer <[email protected]> > Reported-by: Stefan Huber <[email protected]> > --- > README.md | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/README.md b/README.md > index f1b0cbe3..b5937300 100644 > --- a/README.md > +++ b/README.md > @@ -365,7 +365,7 @@ Similarly like x86, Jailhouse can be tried out in a > completely emulated ARM64 > Start the QEMU machine like this: > > qemu-system-aarch64 -cpu cortex-a57 -smp 16 -m 1G \ > - -machine virt,gic-version=3,virtualization=on -nographic \ > + -machine virt,gic-version=3,virtualization=on,its=off -nographic \ > -netdev user,id=net -device virtio-net-device,netdev=net \ > -drive > file=LinuxInstallation.img,format=raw|qcow2|...,id=disk,if=none \ > -device virtio-blk-device,drive=disk \
Good catch. Is this feature flag understood by the recommended QEMU version, or do we need to lift that lower limit along this? Jan -- Siemens AG, Technology 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/33cd5f6b-5735-e8c0-b161-9ced86292b29%40siemens.com.
