Date: Wed, 15 Apr 2009 23:40:24 +0200 From: Paolo Pisati <p.pisati@oltrelinux.com> To: Marcel Moolenaar <xcllnt@mac.com> Cc: arch@freebsd.org Subject: Re: Enabling interrupt filters by default Message-ID: <49E65448.4090302@oltrelinux.com> In-Reply-To: <A3D36F50-C823-41CB-9681-7C87A9BCDFDE@mac.com> References: <200904151324.06754.jhb@freebsd.org> <16C23095-4023-499D-896C-8A7A478FDCE4@mac.com> <200904151613.50568.jhb@freebsd.org> <A3D36F50-C823-41CB-9681-7C87A9BCDFDE@mac.com>
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Marcel Moolenaar wrote: > > August 2007. AFAIK there were different menaces to turn it on but i was never done. > > There was interrupt starvation on sparc64. there were problems with some bridges back then, but i don't know the status today: you could try and tell us :) > There were also > issues with permanently masking stray interrupts. This is > problematic when interrupts are shared and there is at least > 1 filter on it. IIRC that was my mistake trying to cool down interrupt storms, and that piece of code was removed.
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