[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] evtchn: make EVTCHNOP_reset suitable for kexec
>>> On 25.07.14 at 17:48, <vkuznets@xxxxxxxxxx> wrote: > @@ -954,8 +955,20 @@ static long evtchn_reset(evtchn_reset_t *r) > if ( rc ) > goto out; > > - for ( i = 0; port_is_valid(d, i); i++ ) > - (void)__evtchn_close(d, i); > + for ( i = 1; port_is_valid(d, i); i++ ) > + { > + /* > + * Leave all interdomain connections to Dom0 untouched as we need to > + * preserve store/console channels. > + */ > + chn = evtchn_from_port(d, i); > + if ( chn->state != ECS_INTERDOMAIN || > + chn->u.interdomain.remote_dom->domain_id != 0 ) > + (void)__evtchn_close(d, i); > + } You can't alter the behavior of an existing hypercall like this. Did you at all check why it closes all channels, i.e. for what purpose it got introduced? And apart from that blindly leaving all interdomain channels intact doesn't seem reasonable either. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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