Date: Mon, 19 Sep 2005 17:56:30 -0600 From: Scott Long <scottl@samsco.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, ru@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/ed if_ed.c if_ed_pccard.c if_edvar.h Message-ID: <432F502E.10000@samsco.org> In-Reply-To: <20050919.174902.66273219.imp@bsdimp.com> References: <20050919.083111.123550990.imp@bsdimp.com> <20050919145417.GE83017@ip.net.ua> <432ED22E.5010005@samsco.org> <20050919.174902.66273219.imp@bsdimp.com>
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M. Warner Losh wrote: > In message: <432ED22E.5010005@samsco.org> > Scott Long <scottl@samsco.org> writes: > : Ruslan Ermilov wrote: > : > On Mon, Sep 19, 2005 at 08:31:11AM -0600, M. Warner Losh wrote: > : > > : >>In message: <20050919054051.GB65954@ip.net.ua> > : >> Ruslan Ermilov <ru@freebsd.org> writes: > : >>: About the commonality... Usually foo_stop() (which is called first in > : >>: foo_detach() if you were talking about the detach) disables interrupts, > : >>: so foo_intr() doesn't usually happen. From reading the code, I see the > : >>: same holds true for ed(4). > : >> > : >>Wrong. Foo_intr() does still happen because other devices can > : >>generate interrupts... > : >> > : > > : > Ah, you're right, I missed this bit. :-) > : > > : > : Shared interrupts are only slightly less of an abomination as shared > : ithreads =-) > > Sadly, shared interrupts are a fact of life in the x86 world. And > on platforms that support pci to pccard/cardbus bridges, there will > always be sharing of interrupts due to the architecture of the YENTA > bridges... > > Warner Luckily Express Card (or whatever they decided to call it this week) will make this obsolete over time. Scott
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