Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts

[Peter Maydell]

On 20 December 2011 16:29, Alexander Graf <address@hidden> wrote:
> On 20.12.2011, at 17:17, Peter Maydell wrote:
>> On 14 December 2011 01:43, Alexander Graf <address@hidden> wrote:
>>> +unsigned long reserved_va = 0xf7000000;
>>
>> So why 0xf7000000 rather than the whole of the 32 bit space?
>>
>> (In particular for ARM targets we want to be able to mmap
>> at 0xFFFFxxxx...)
>
> Because that didn't work for me. We still need the commpage
> above our reserved memory range, so this was the highest value
> that was safe for me.

Hmm, that suggests we didn't get the interaction of the commpage
with the reserved range right -- the commpage is part of the
guest memory space so it should be OK for it to be inside
the reserved range.

-- PMM