On Fri, 29 May 2020 at 12:28, Beata Michalska <beata.michalska@xxxxxxxxxx> wrote: > > Some of the ARMv7 & ARMv8 load/store instructions might trigger a data abort > exception with no valid ISS info to be decoded. The lack of decode info > makes it at least tricky to emulate the instruction which is one of the > (many) reasons why KVM will not even try to do so. > > So far, if a guest made an attempt to access memory outside the memory slot, > KVM reported vague ENOSYS. As a result QEMU exited with no useful information > being provided or even a clue on what has just happened. > > ARM KVM introduced support for notifying of an attempt to execute > an instruction that resulted in dabt with no valid ISS decoding info. > This still leaves QEMU to handle the case, but at least now it gives more > control and a start point for more meaningful handling of such cases. > > This patchset relies on KVM to insert the external data abort into the guest. > > > Thanks for all the input on the previous version! Applied to target-arm.next, thanks. -- PMM _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
