On Thu, Nov 23, 2023 at 12:05:06PM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann <arnd@xxxxxxxx> > > Over the years we went from > 1000 of warnings to under 100 earlier > this year, and I sent patches to address all the ones that I saw with > compile testing randcom configs on arm64, arm and x86 kernels. This is a > really useful warning, as it catches real bugs when there are mismatched > prototypes. In particular with kernel control flow integrity enabled, > those are no longer allowed. > > I have done extensive testing to ensure that there are no new build > errors or warnings on any configuration of x86, arm and arm64 builds. > I also made sure that at least the both the normal defconfig and an > allmodconfig build is clean for arc, csky, loongarch, m68k, microblaze, > openrisc, parisc, powerpc, riscv, s390, and xtensa, with the respective > maintainers doing most of the patches. > > At this point, there are five architectures with a number of known > regressions: alpha, nios2, mips, sh and sparc. In the previous version > of this patch, I had turned off the missing prototype warnings for the 15 > architectures that still had issues, but since there are only five left, > I think we can leave the rest to the maintainers (Cc'd here) as well. > Not sure I understand why this was so important that it warrants the resulting buildtest failures. FWIW, I'll disable WERROR in my build tests for the affected architectures. That is kind of counter-productive, but the only real alternative would be to stop build (and sometimes, such as for ppc, runtime) tests entirely, which would be even worse. Guenter
