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Re: [Qemu-devel] aarch64 & gdb: warning: while parsing target descriptio

From: Richard W.M. Jones
Subject: Re: [Qemu-devel] aarch64 & gdb: warning: while parsing target description (at line 1): Could not load XML document "arm-core.xml"
Date: Thu, 7 Aug 2014 16:06:43 +0100
User-agent: Mutt/1.5.20 (2009-12-10)

On Thu, Aug 07, 2014 at 02:53:33PM +0100, Peter Maydell wrote:
> On 7 August 2014 14:43, Christopher Covington <address@hidden> wrote:
> > On 08/07/2014 08:03 AM, Peter Maydell wrote:
> >> No, because at the moment our AArch64 TCG implementation
> >> (and the way we configure KVM) assumes that the highest
> >> exception level is running AArch64. We might fix this eventually,
> >> though.
> >
> > When EL3 and EL2 support is added, the bootloader will
> > presumably have to be modified to make the switch from
> > EL3 into EL2. In my experience switching into AArch32
> > EL2 instead of AArch64 EL2 is an easy option to add.
> I think the biggest difficulty is not the code to actually
> do the switch but figuring out what the command line
> UI to request "start in AArch32" ought to be and how that
> then gets plumbed into the code to do the actual work.

Out of interest, how do you do this on real hardware?


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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