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

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Le 16/06/2018 à 02:53, Paul Burton a écrit :
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
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