Re: [Qemu-devel] [PATCH v2] qtest: ask endianness of the target in qtest_init()

[Peter Maydell]

On 10 October 2016 at 05:55, David Gibson <address@hidden> wrote:
> However right now - until we get fixed-endianness qtest accessors of
> some sort - this test is more or less necessary to make most tests
> cross platform correct (except PCI, see below).  That's because the
> testcase will generally know the endianness of the hardware it's
> testing, but has to compensate for the endianness that the
> readw/writew primitives will use along the way.

The test case isn't testing the hardware (device), though, it's
testing the hardware in a system. The same device in QEMU board A
could be behind a bridge or otherwise differently wired by
the SoC from the device in QEMU board B. The qtest setup
doesn't instantiate a device and talk directly to it, it
instantiates a board and talks over the same interface the
emulated CPU would.

thanks
-- PMM