From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Mon, 30 Jun 2014 18:07:38 +0100 Subject: [GIT PULL] nommu fixes for 3.17-rc1 In-Reply-To: References: <20140630144355.GH14781@pengutronix.de> <4782912.zqsM5TNPdE@wuerfel> Message-ID: <20140630170738.GB30740@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Jun 30, 2014 at 06:00:37PM +0100, Linus Walleij wrote: > On Mon, Jun 30, 2014 at 5:52 PM, Arnd Bergmann wrote: > > Your reasoning is that mach-integrator now doesn't work with !MMU any more > > since it selects ARM_PATCH_PHYS_VIRT, and that no other platform uses > > these CPUs. The change to integrator was done as a preparation for > > multiplatform support and probably did not mean to remove support for !MMU > > integrator. > > Well actually the !MMU case has probably never really worked on the > Integrator. I never heard of anyone doing that. The only person who ever > mentioned running !MMU tiles (such as the 740 or 94x variants) was Will > Deacon and I don't know if he ever got it anywhere. I booted a 740t on an Integrator AP at the start of last year without issues (once I'd fixed up proc-arm740.S -- the patches are in mainline). It wasn't for anything useful though, I'm just sad that way. > However if it is a good testbase for people synthesizing these old non-MMU > ARM cores still and using Linux with them, then it would make sense to > get that into shape and supported I guess? Especially now that the > Integrator machine is soon-ish even multiplatform (famous last words). > > So we need some input here ... To be honest, I'm finding it more and more difficult to care about uclinux outside of Cortex-M. Could we simply decide to support only v7m and rip out the code for other !MMU targets, or are there actually users of those things with mainline kernels? Will