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Re: notify_no_senders oddity
From: |
Samuel Thibault |
Subject: |
Re: notify_no_senders oddity |
Date: |
Mon, 1 Jan 2007 20:08:17 +0100 |
User-agent: |
Mutt/1.5.11 |
Richard Braun, le Mon 01 Jan 2007 17:47:32 +0100, a écrit :
> On Mon, Jan 01, 2007 at 11:49:54AM +0100, Samuel Thibault wrote:
> > Ok, and how these two views may coexist? As I showed, they _are_ mixed
> > in the case of the linux block device glue for instance:
> > linux/dev/glue/block.c:device_open():
> >
> > bd->device.emul_data = bd;
> > bd->device.emul_ops = &linux_block_emulation_ops;
> > ...
> > bd->port = ipc_port_alloc_kernel ();
> > ...
> > notify = ipc_port_make_sonce (bd->port);
> > ip_lock (bd->port);
> > ipc_port_nsrequest (bd->port, 1, notify, ¬ify);
> >
> >
> > So here it's really a plain IPC port that is used (and it's the same in
> > the plain device/ds_routines.c, linux net glue and pcmcia glue), while
> > on the other end: i386/i386at/i386at_ds_routines.c
> >
> > dev = (device_t) ns->not_header.msgh_remote_port;
> >
> > How can this work? (I currently have a kernel fault here)
>
> I guess it's because the device_t type is defined to something else
> for i386 devices :
No objection to that, since that's precisely what Thomas said. But just
to repeat myself: as quoted above linux block/net/pcmcia devices and
mach devices provide an IPC port, not a device_t!
Samuel
- Re: notify_no_senders oddity, Samuel Thibault, 2007/01/01
- Re: notify_no_senders oddity, Richard Braun, 2007/01/01
- Re: notify_no_senders oddity,
Samuel Thibault <=
- Re: notify_no_senders oddity, Thomas Bushnell BSG, 2007/01/01
- Re: notify_no_senders oddity, Samuel Thibault, 2007/01/01
- Re: notify_no_senders oddity, Thomas Bushnell BSG, 2007/01/01
- Re: notify_no_senders oddity, Samuel Thibault, 2007/01/01
- Re: notify_no_senders oddity, Thomas Bushnell BSG, 2007/01/01
- Re: notify_no_senders oddity, Samuel Thibault, 2007/01/01
- Re: notify_no_senders oddity, Samuel Thibault, 2007/01/01
Re: notify_no_senders oddity, Thomas Bushnell BSG, 2007/01/01