Date: Sat, 31 May 2003 23:48:15 -0400 From: Mike Makonnen <mtm@identd.net> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: threads@freebsd.org Subject: Re: libthr: thr_create(2): no kernel stack? Message-ID: <20030601034817.OXXJ20810.pop015.verizon.net@kokeb.ambesa.net> In-Reply-To: <20030531072259.GA2408@athlon.pn.xcllnt.net> References: <20030531072259.GA2408@athlon.pn.xcllnt.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, 31 May 2003 00:22:59 -0700 Marcel Moolenaar <marcel@xcllnt.net> wrote: > Gang, > > I'm porting libthr to ia64 and reached a point where I can actually > do initial testing. I immediately hit upon a snafu in thr_create(2). > The second bcopy (ie sys/kern/kern_thr.c:159) is panicing because > the new thread (td0) does not have a frame (ie td_frame == NULL). > Creating a frame is obviously the thing to do, but there's no kernel > stack created for the new thread AFAICT. Without kernel thread. > cpu_set_upcall() will also fail if we ever reach that point. > > Am I missing something here? I just took a look at this and it _did_ look funny, but it seems to work on i386 so I did a little more digging and it seems that the stack frame is allocated in the uma thread initialization routine thread_init(), which calls cpu_thread_setup(). This is currently undefined for ia64: ia64/ia64/vm_machdep.c: line 110 Cheers. -- Mike Makonnen | GPG-KEY: http://www.identd.net/~mtm/mtm.asc mtm@identd.net | D228 1A6F C64E 120A A1C9 A3AA DAE1 E2AF DBCC 68B9 mtm@FreeBSD.Org| FreeBSD - The Power To Serve
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030601034817.OXXJ20810.pop015.verizon.net>