Re: [Xen-devel] [ANNOUNCE] Xen port to Cortex-A15 / ARMv7 with virt extensions

[Catalin Marinas <catalin.marinas@xxxxxxx>]

On Fri, Dec 16, 2011 at 03:43:57PM +0000, David Vrabel wrote:
> On 30/11/11 14:11, Catalin Marinas wrote:
> > On 30 November 2011 11:39, Stefano Stabellini
> > <stefano.stabellini@xxxxxxxxxxxxx> wrote:
> >> A git branch is available here (not ready for submission):
> >>
> >> git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git arm
> >>
> >> the branch above is based on git://linux-arm.org/linux-2.6.git arm-lpae,
> >> even though guests don't really need lpae support to run on Xen.
> > 
> > Indeed, you don't really need LPAE. What you may need though is
> > generic timers support for A15, it would allow less Hypervisor traps.
> > For up-to-date architecture patches (well, development tree, not
> > guaranteed to be stable), I would recommend this (they get into
> > mainline at some point):
> > 
> > http://git.kernel.org/?p=linux/kernel/git/cmarinas/linux-arm-arch.git;a=summary
> > 
> > Either use master or just cherry-pick the branches that you are interested 
> > in.
> 
> Which branches are required for the Versatile Express with the
> Cortex-A15? I merged linux-arm-arch/arm-arch/vexpress in

That's the branch if you only need VE and A15 support

> but I get a
> instruction fault immediately after branching to __mmap_switched.
> 
> Is it not setting up the MMU correctly?

Do you run this on a software model? What config options do you use? You
would need to enable VEXPRESS_EXTENDED_MEMORY_MAP and
ARCH_VEXPRESS_CA15X4.

-- 
Catalin

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