Date: Wed, 29 Mar 2006 09:26:08 -0700 From: Scott Long <scottl@samsco.org> To: John Baldwin <jhb@freebsd.org> Cc: Bruce M Simpson <bms@spc.org>, "Conrad J. Sabatier" <conrads@cox.net>, freebsd-current@freebsd.org Subject: Re: device atpic to be deprecated? Message-ID: <442AB520.5050505@samsco.org> In-Reply-To: <200603290841.50759.jhb@freebsd.org> References: <20060329020527.f8f087a4.conrads@cox.net> <20060329085117.GU80492@spc.org> <200603290841.50759.jhb@freebsd.org>
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John Baldwin wrote: > On Wednesday 29 March 2006 03:51 am, Bruce M Simpson wrote: > >>On Wed, Mar 29, 2006 at 02:05:27AM -0600, Conrad J. Sabatier wrote: >> >>>Is the plan still in effect to abolish this device? >> >>To my mind it wouldn't make much sense, given the sheer amount of hardware >>out there which doesn't have an IOAPIC, then again I'm probably out of >>touch with the state of interrupt handling in -CURRENT. > > > All amd64 machines (which is where atpic would be removed) have an APIC. > That's kind of like saying that ISA will be removed because there is PCI =-) Having an APIC doesn't necessarily guarantee that it works. There have been enough reports of problems on the mailing lists over time that I think it's a bit premature to declare the ATPIC dead. Also, is the ATPIC code in amd64 causing problems, holding back progress, or creating a maintenance burden? Scott
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