Date: Fri, 16 Mar 2001 01:41:25 -0800 (PST) From: Matthew Jacob <mjacob@feral.com> To: Doug Rabson <dfr@nlsystems.com> Cc: John Baldwin <jhb@FreeBSD.org>, arch@FreeBSD.org Subject: Re: Proposal for the CPU interrupt API Message-ID: <Pine.BSF.4.21.0103160138210.75559-100000@beppo.feral.com> In-Reply-To: <Pine.BSF.4.33.0103160928560.47065-100000@salmon.nlsystems.com>
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> On the alpha, IPL is a cpu-local attribute as far as I know. The Alpha architecture books are fairly clear that IPL is part of the processor status word which is per-cpu. But the semantics of interrupt disabling *may* be construed to be just disabling all interrupts for all CPUs. I was serious when I said there might be an advantage to leaving this vague at this time rather than trying to nail it down. (in the PPC architecture I believe that page faults are interrupts) -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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