Hi Paul,
Paul Durrant <xadimg...@gmail.com> writes: > On 21/11/2023 22:10, Volodymyr Babchuk wrote: >> was created by QEMU >> Xen PV devices in QEMU can be created in two ways: either by QEMU >> itself, if they were passed via command line, or by Xen toolstack. In >> the latter case, QEMU scans XenStore entries and configures devices >> accordingly. >> In the second case we don't want QEMU to write/delete front-end >> entries for two reasons: it might have no access to those entries if >> it is running in un-privileged domain and it is just incorrect to >> overwrite entries already provided by Xen toolstack, because toolstack >> manages those nodes. For example, it might read backend- or frontend- >> state to be sure that they are both disconnected and it is safe to >> destroy a domain. >> This patch checks presence of xendev->backend to check if Xen PV >> device is acting as a backend (i.e. it was configured by Xen > > Technally *all* XenDevice objects are backends. > Yes, you are right of course. I'll rephrase this paragraph in the next version. -- WBR, Volodymyr
