On Fri, Jun 15, 2018 at 05:53:19PM -0700, Paul Burton wrote:
> This series introduces infrastructure allowing compiler diagnostics to
> be disabled or their severity modified for specific pieces of code, with
> suitable abstractions to prevent that code from becoming tied to a
> specific compiler.
>
> This infrastructure is then used to disable the -Wattribute-alias
> warning around syscall definitions, which rely on type mismatches to
> sanitize arguments.
>
> Finally PowerPC-specific #pragma's are removed now that the generic code
> is handling this.
>
> The series takes Arnd's RFC patches & addresses the review comments they
> received. The most notable effect of this series to to avoid warnings &
> build failures caused by -Wattribute-alias when compiling the kernel
> with GCC 8.
>
> Applies cleanly atop master as of 9215310cf13b ("Merge
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net").
>
> Thanks,
> Paul
>
> Arnd Bergmann (2):
> kbuild: add macro for controlling warnings to linux/compiler.h
> disable -Wattribute-alias warning for SYSCALL_DEFINEx()
>
> Paul Burton (1):
> Revert "powerpc: fix build failure by disabling attribute-alias
> warning in pci_32"
>
> arch/powerpc/kernel/pci_32.c | 4 ---
> include/linux/compat.h | 8 ++++-
> include/linux/compiler-gcc.h | 66 ++++++++++++++++++++++++++++++++++
> include/linux/compiler_types.h | 18 ++++++++++
> include/linux/syscalls.h | 4 +++
> 5 files changed, 95 insertions(+), 5 deletions(-)
Hello Paul,
I tested the series out with the new OpenRISC 9.0.0 port and the
-Wattribute-alias warnings are gone. Thank you.
Using toolchain binaries from:
https://github.com/stffrdhrn/gcc/releases/tag/or1k-9.0.0-20180613
For the series:
Tested-by: Stafford Horne <shorne@xxxxxxxxx>
-Stafford
