From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dor Laor Subject: Re: Spawning threads in KVM/QEMU Date: Wed, 14 Nov 2007 00:42:03 +0200 Message-ID: <473A283B.5040905@qumranet.com> References: <473A05D6.2040003@us.ibm.com> Reply-To: dor.laor-atKUWr5tajBWk0Htik3J/w@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel , Avi Kivity To: Anthony Liguori Return-path: In-Reply-To: <473A05D6.2040003-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Anthony Liguori wrote: > Hi, > > I've been experimenting with creating IO threads for the PV device > drivers. Unfortunately, my experiments haven't gotten very far as QEMU > tends to hang up a bit into booting the guest whenever I spawn a thread > that does any sort of read/write on a file descriptor. My suspicion is > that it has something to do with signals being delivered to the wrong > thread but after masking out all the signals for this thread, I still > had no luck. > > Maybe you set the mask too late? try setting it before creating the thread: sigfillset(&thread_sig_mask); sigdelset(&thread_sig_mask,SIGILL); sigdelset(&thread_sig_mask,SIGFPE); sigdelset(&thread_sig_mask,SIGSEGV); pthread_sigmask(SIG_SETMASK, &thread_sig_mask, &curr_sig_mask); if ((r = pthread_create(&thread_tid, NULL, thread_func, &init_data))) { .... } pthread_sigmask(SIG_SETMASK, &curr_sig_mask, NULL); > Any clues to what may be going on? > > Regards, > > Anthony Liguori > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > kvm-devel mailing list > kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org > https://lists.sourceforge.net/lists/listinfo/kvm-devel > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/