Re: [PATCH] rdma/siw: Use proper enumerated type in map_cqe_status

[Nathan Chancellor]

On Thu, Jul 11, 2019 at 02:18:08PM -0300, Jason Gunthorpe wrote:
> On Thu, Jul 11, 2019 at 10:16:44AM -0700, Nick Desaulniers wrote:
> > On Thu, Jul 11, 2019 at 6:39 AM Jason Gunthorpe <jgg@xxxxxxxx> wrote:
> > >
> > > On Thu, Jul 11, 2019 at 01:14:34AM -0700, Nathan Chancellor wrote:
> > > > Maybe time to start plumbing Clang into your test flow until it can get
> > > > intergrated with more CI setups? :) It can catch some pretty dodgy
> > > > behavior that GCC doesn't:
> > >
> > > I keep asking how to use clang to build the kernel and last I was told
> > > it still wasn't ready..
> > >
> > > Is it ready now? Is there some flow that will compile with clang
> > > warning free, on any arch? (at least the portion of the kernel I check)
> > 
> > $ make CC=clang ...
> > 
> > Let us know if you find something we haven't already.
> > https://clangbuiltlinux.github.io/
> > https://github.com/ClangBuiltLinux/linux/issues
> 
> What clang version?
> 
> Jason

You'll need clang-9 for x86 because of the asm-goto requirement (or a
selective set of reverts for clang-8) but everything else should be
good with clang-8:

https://travis-ci.com/ClangBuiltLinux/continuous-integration/builds/118745131

We wrote a Python script that builds an LLVM 9 toolchain suitable for
kernel development that is self contained (doesn't install anything to
your system):

https://github.com/ClangBuiltLinux/tc-build

Let me know if there are any issues with it if you give it a go, I've
already fixed one from Thomas Gleixner:

https://lore.kernel.org/lkml/alpine.DEB.2.21.1906262140570.32342@xxxxxxxxxxxxxxxxxxxxxxx/

Cheers,
Nathan