Re: [Qemu-devel] [PULL 0/9] Misc patches for QEMU 2.5-rc2 (2015-11-25)

[Paolo Bonzini]

On 26/11/2015 13:19, Peter Maydell wrote:
> On 26 November 2015 at 12:15, Markus Armbruster <address@hidden> wrote:
>> Peter Maydell <address@hidden> writes:
>>> I don't see much point in documenting what we rely on
>>> if we can't rely on it and need to stop relying on it.
>>
>> "Can't" and "need" are too strong.  The kernel can, and I fail to see
>> what makes us so special that we absolutely cannot.
> 
> The kernel has the luxury of being able to say "we only compile
> with gcc".

Actually no, there are people interested in compiling it with clang
(mostly because of GPL FUD and LLVM koolaid, but that's secondary in
this context).

>> For what it's worth, I'm sick and tired of patches "fixing" signed
>> shifts, and the unnecessary risk that comes with them.
> 
> Me too.

Great, that's a start.  And I'm totally not sarcastic about this.

Paolo

> I just want us to fix this by getting the compiler authors
> to document that we can rely on this stuff, not just by silencing
> warnings in QEMU's makefiles.