From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Subject: Re: [PATCHv4 3/3] ARM: mvebu: implement L2/PCIe deadlock workaround Date: Fri, 16 May 2014 15:21:41 +0200 Message-ID: <20140516152141.564dde70@free-electrons.com> References: <1400165974-9059-1-git-send-email-thomas.petazzoni@free-electrons.com> <1400165974-9059-4-git-send-email-thomas.petazzoni@free-electrons.com> <20140516060851.GF27822@titan.lakedaemon.net> <20140516090727.5264dc75@free-electrons.com> <20140516125847.GG27822@titan.lakedaemon.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140516125847.GG27822-u4khhh1J0LxI1Ri9qeTfzeTW4wlIGRCZ@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jason Cooper Cc: Russell King , Will Deacon , Catalin Marinas , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Grant Likely , Rob Herring , Arnd Bergmann , Albin Tonnerre , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Andrew Lunn , Sebastian Hesselbarth , Gregory Clement , Tawfik Bayouk , Nadav Haklai , Lior Amsalem , Ezequiel Garcia List-Id: devicetree@vger.kernel.org Dear Jason Cooper, On Fri, 16 May 2014 08:58:47 -0400, Jason Cooper wrote: > > Hum, well, I believe it's OK, but notice that I will very likely have > > to do a followup patch, because the solution of making all PCI I/O > > mappings use the MT_UNCACHED memory type, suggested by Arnd, has not > > been accepted by Will Deacon. So very likely I will have to change > > again the mach-mvebu/coherency.c code to call a function that makes PCI > > I/O mappings MT_UNCACHED specifically for the mach-mvebu platform. But > > that can indeed be a followup patch. > > Ahh, my mistake. It was late. I saw the arm,io-coherent was settled > and mistakenly thought the other proposed changes wouldn't affect this > patch. > > I could easily drop it if you like. It's currently the tip of mvebu/soc > and I haven't done a signed tag for it yet. I think it's OK, you can keep it: the PCI I/O mapping thing will come as an addition. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html