From mboxrd@z Thu Jan 1 00:00:00 1970 From: jemmajones81@yahoo.co.uk (Jemma Jones) Date: Fri, 4 May 2012 09:44:07 +0100 (BST) Subject: Development tree for Cortex-A15? In-Reply-To: <6e4ad6defa33bf693ec45cae819469f0@localhost> References: <1336046199.46241.YahooMailNeo@web132501.mail.ird.yahoo.com> <1336052155.37772.YahooMailNeo@web132504.mail.ird.yahoo.com> <6e4ad6defa33bf693ec45cae819469f0@localhost> Message-ID: <1336121047.79153.YahooMailNeo@web132504.mail.ird.yahoo.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > Subject: Re: Development tree for Cortex-A15? > > On Thu, 3 May 2012 14:35:55 +0100 (BST), Jemma Jones > wrote: >>> Subject: Re: Development tree for Cortex-A15? >> >>> >>> On Thu, 3 May 2012 12:56:39 +0100 (BST), Jemma Jones >>> wrote: >>> >>> Hi Jemma, >>> >>>> ? Hi, I'm looking for the latest KVM-enabled developer version > of the >>> Linux >>>> ? kernel for ARM on the Versatile Express board with the Cortex-A15 >>>> ? CPU.? >>> >>> It really depends on what you call "developer version". As > far as I >>> know, >>> there is nothing but dev trees around ;-). >>> >>>> ? I have pulled from these two trees >>>> >>>> >>> > http://git.kernel.org/?p=linux/kernel/git/cmarinas/linux-arm-arch.git;a=summary >>>> >>> > http://git.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=summary >>>> >>>> ? But it seems the 2nd one is more up-to-date with KVM enablement > while >>>> ? it >>>> ? doesn't have any support for the A15 VE board? And the 1st one > >>> doesn't >>>> ? support KVM on ARM with the ARMv7 virtualization extensions? >>> >>> First, my tree (the second one) does support the A15. Otherwise I'd > have >>> a >>> hard time testing my own code... Which branch are you looking at? > Please >>> note that the KVM branches in this tree are under heavy development, > and >>> are only suitable if you don't mind frequent rebases and regular > breakage >>> due to bleeding edge code. >> >> I'm currently on kvm-arm-v7-ael, because it looked like the most >> up-to-date one. Which one should I be using for Cortex-A15 support? > > That branch is good enough, if you have a bleeding edge QEMU. Note that > the VE A15 support in that tree is DT only. I'm working on a v3.4 based one > at the moment, but that's not completely ready yet. I'm just a little confused because under arch/arm/mach-vexpress/ there is no A15 tile? On the virtualopensystems.com git (which you quote above) you had to explicitly enable the board and it would show up in the .config as CONFIG_ARCH_VEXPRESS_CA15X4. Is that not the case anymore in your kernel tree?