Re: [Qemu-devel] Loading image/elf to cpu that has different not system memory address space

[Peter Maydell]

On 30 September 2015 at 13:15, Marcin Krzemiński
<address@hidden> wrote:
>
>
> 2015-09-30 12:44 GMT+02:00 Peter Maydell <address@hidden>:
>>
>> On 30 September 2015 at 06:18, Marcin Krzemiński
>> <address@hidden> wrote:
>> > I have at 0xfffffff0 real memory now (with aliasing to lower memory
>> > address).
>> > Does it mean that qemu might try to execute some instructions from
>> > there?
>>
>> As I say, we need there to be fake RAM at that address. We never
>> try to read its contents, though.

> That wasn't clear for me.
> Since I have real and used memory there in my model I worried that I my get
> sometimes unexpected behavior.

It seems very unlikely that you would have real memory there in an
M profile CPU system -- that address range is part of the Vendor
System section of the address space. (Among other things it's
compulsorily execute-never.)

thanks
-- PMM