Date: Wed, 3 May 2006 09:32:52 -0400 From: John Baldwin <jhb@freebsd.org> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: freebsd-acpi@freebsd.org, Rong-En Fan <rafan@infor.org> Subject: Re: acpi as kernel module on i386 Message-ID: <200605030932.54775.jhb@freebsd.org> In-Reply-To: <BFBCDEB4-E7F6-4E73-A65A-3A7BA51DDA87@xcllnt.net> References: <20060502181804.GA93421@svm.csie.ntu.edu.tw> <200605021559.44121.jhb@freebsd.org> <BFBCDEB4-E7F6-4E73-A65A-3A7BA51DDA87@xcllnt.net>
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On Tuesday 02 May 2006 18:51, Marcel Moolenaar wrote: > > On May 2, 2006, at 12:59 PM, John Baldwin wrote: > > > On Tuesday 02 May 2006 14:18, Rong-En Fan wrote: > >> Hi, > >> > >> Recently commit to ppc code that also decouples the isa+acpi > >> attachment into separate case, that makes my ppc and lpt disappear > >> if acpi is loaded as a module. (see the thread "lpt0 disappear (ppc > >> related) on -current) > >> > >> However, i386/conf/NOTES says that building acpi into module is > >> deprecated. Just wondering why amd64 uses acpi in kernel conf > >> (I'm not sure about other arch), and on i386 we said this is a > >> deprecated usage? > > > > ACPI is mandatory for amd64 and ia64, but it is optional on i386. > > Because it is optional, it is a module so that the loader can only > > load it on machines that support it. I think the ppc module should > > be changed to include the acpi attachment personally, assuming that > > the ppc module already includes the ppc isa attachment. > > On i386, it should be safe to compile the acpi(4) attachment when only > device isa is configured into the kernel. It should not be done for all > platforms. While acpi(4) is mandatory on ia64, isa(4) isn't and it's > my goal to get rid of isa(4) altogether on ia64. Well, the ppc acpi attachment can be optionally included in the module build for the archs that ppc acpi devices. > Alternatively, acpi(4) can be considered non-optional for current > x86 hardware and having acpi(4) configured into the kernel is not > such an odd thing to do for a modern x86 operating system. I personally compile 'device acpi' into my kernels on i386 and basically never use modules except for development anyway. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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