Re: [PATCH 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx()

[Christophe LEROY]

Le 16/06/2018 Ã 02:53, Paul Burton a ÃcritÂ:
> 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(-)

Works well, thanks.

You can then also revert 	2479bfc9bc600dcce7f932d52dcfa8d677c41f93
("powerpc: Fix build by disabling attribute-alias warning for 
SYSCALL_DEFINEx")

Christophe