From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 26 Nov 2003 13:48:14 -0700 From: Matt Porter To: Felix Domke Cc: linuxppc-embedded@lists.linuxppc.org Subject: Re: 405 Critical Interrupts Message-ID: <20031126134814.A9704@home.com> References: <3FC4D4B5.2030901@elitedvb.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <3FC4D4B5.2030901@elitedvb.net>; from tmbinc@elitedvb.net on Wed, Nov 26, 2003 at 05:28:37PM +0100 Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On Wed, Nov 26, 2003 at 05:28:37PM +0100, Felix Domke wrote: > I thought about routing the CriticalInterrupt pretty much the same way > as the HardwareInterrupt, but with disabling MSR_CE. MSR_CE would be > enabled then even in (normal) interrupts, we probably have to add a > __crit_cli and __save_and_crit_cli as someone already suggested. > > Does CRIT_EXCEPTION work? Is do_IRQ reentrant? Should i use the same > interrupt processing as a normal hardware interrupt, with the exception > that only "critical"-flagged interrupts are processed? > > Any suggestions? You could backport the critical exception handling code from 2.6. -Matt ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/