cvs commit: src/sys/i386/i386 machdep.c

[John Baldwin]

On 03-Dec-2003 John Baldwin wrote:
> jhb         2003/12/03 13:12:09 PST
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/i386/i386        machdep.c 
>   Log:
>   - Remove the hack to prevent the acpi module from loading.
>   - Add a really, really, nasty hack to provide stub versions of all of
>     the 'device apic' functions used by the ACPI MADT APIC enumerator if
>     'device apic' is not compiled into the kernel.  This is gross but is
>     the best we can do with the current kernel linker implementation.
>   
>   Approved by:    re (scottl / blanket)

Ideally, acpi.ko would contain two modules: 1 main acpi.kld module
that was required and one optional madt.kld module that just contained
madt.o and was optional.  Then loading the module would succeed so
long as the required 'acpi' module linked but if the optional 'madt'
module failed to link, it would just be tossed.  We don't really seem
to be setup to do such things right now though.  A more feasible model
might be an acpi.a that contains acpi.ko and madt.ko and allow the
kernel linker to handle foo.a by requiring the first .ko in the archive
to link and having any additional .ko's be optional.  This would work
both for the acpi.ko/madt.ko case as well as bus attachments for device
drivers such as a sym.a with sym.ko/sym_pci.ko/sym_cbus.ko, etc.

-- 

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/