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Re: [Xen-users] ARM: Xen on Vexpress

On 06/16/2014 05:32 PM, Jeenu Viswambharan wrote:
> On Thu, Jun 12, 2014 at 15:50:02, Jeenu Viswambharan wrote:
>>>>   - What does DOM0 see as its PC at entry?
>>> The load address of the kernel image, since the zImage protocol
>>> requires us to enter the kernel at that offset.
>> I managed to break at eret before guest entry, and the PC is
>> 0xafc00000 itself. It does fail to boot bare metal too from that
>> address. I'll see if I can find what's going wrong.
> I've been told that loading Linux at that high an offset from the memory
> base wouldn't work after all, even on bare metal. I therefore set
> kernel_addr_r to 0x80008000, which makes Xen load DOM0 at 0x8fc00000. I
> can see Linux starting to boot from this address on bare metal, but With
> Xen I'm seeing "uncompression error" (not printed on to the console, but
> through debugger inspection).
> I haven't pinned down why exactly it's throwing this. While I'm at it,
> I'd appreciate any helpful pointers.

I will try to boot Xen my vexpress today or tomorrow. I will let you
know if I find the same issue.


Julien Grall

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