Re: [Qemu-devel] [PATCH] qtest: add read/write accessors with a specific endianness

[Peter Maydell]

On 5 October 2016 at 07:00, Cédric Le Goater <address@hidden> wrote:
> On 10/05/2016 03:53 PM, Peter Maydell wrote:
>> Which tswap? Last time I worked through the stack of
>> what happens I thought that we had the right set of
>> swaps in the right places.
>
> The one I am talking about are under qtest_process_command(),
> see below.

Those are correct and required, and they do not change
the overall behaviour of the system depending on the host
endianness. (They convert 32-bit values to "bag of
bytes in guest order" which is what the cpu_physical_memory_*
functions want.)

https://lists.gnu.org/archive/html/qemu-arm/2016-07/msg00037.html
is the explanation from last time around, I think.

If your test is giving different answers on different
host endiannesses, it is presumably because it is
incorrectly issuing different readl/etc commands
in the two cases.

thanks
-- PMM