From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4D6E6492.6010001@domain.hid> Date: Wed, 02 Mar 2011 16:38:58 +0100 From: Gilles Chanteperdrix MIME-Version: 1.0 References: <20110302151603.GA14557@domain.hid> <4D6E61B6.906@domain.hid> <20110302153411.GB14557@domain.hid> In-Reply-To: <20110302153411.GB14557@domain.hid> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Stuck MSI in normal Linux driver List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Cochran Cc: xenomai@xenomai.org Richard Cochran wrote: > On Wed, Mar 02, 2011 at 04:26:46PM +0100, Gilles Chanteperdrix wrote: >> Richard Cochran wrote: >>> If so, where/how can I start to get working on fixing it? >>> >>> (I don't need the MSI in a rtdm or adeos context.) >> Given that the problem is that the interrupt controller ack/mask >> functions (if I recall correctly) need, on x86, to use some Linux >> primitives which can not be called from Xenomai domain, I am not sure it >> is easy to fix. And the fact that you do not need the MSI in Xenomai >> domain does not change anything, since ack/mask routines are called >> ahead of the pipeline anyway. > > Okay, but how about on PowerPC, can I get to work there? I do not think powerpc has the same issue. Check that you do not have an edge/level issue (MSI are edge triggered I think). -- Gilles.