Re: [Qemu-devel] aarch64 & gdb: warning: while parsing target description (at line 1): Could not load XML document "arm-core.xml"

["Richard W.M. Jones" <rjones@redhat.com>]

On Thu, Aug 07, 2014 at 02:53:33PM +0100, Peter Maydell wrote:
> On 7 August 2014 14:43, Christopher Covington <cov@codeaurora.org> 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?

Rich.

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