On October 10, 2016 2:45:38 PM PDT, Rui Salvaterra <rsalvate...@gmail.com> wrote: >Hi, Thomas, Ingo, Peter, > >(Sending as RFC, since I don't know if this patch is acceptable.) > >The GCC team has deprecated atom as a march/mtune target since almost >three >years ago, according to this mailing list thread [1], in favour of >specific >microarchitecture names (bonnell, silvermont). This patch changes the >Atom >optimisation target in the kernel to bonnell, as it was originally >intended. > >Tested on an x86-64 Atom 330 machine. No functional changes. > >[1] https://gcc.gnu.org/ml/gcc-patches/2013-12/msg01805.html > >Signed-off-by: Rui Salvaterra <rsalvate...@gmail.com> >--- > arch/x86/Makefile | 4 ++-- > arch/x86/Makefile_32.cpu | 4 ++-- > 2 files changed, 4 insertions(+), 4 deletions(-) > >diff --git a/arch/x86/Makefile b/arch/x86/Makefile >index 2d44933..b7d615f 100644 >--- a/arch/x86/Makefile >+++ b/arch/x86/Makefile >@@ -109,8 +109,8 @@ else > > cflags-$(CONFIG_MCORE2) += \ > $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) >- cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \ >- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) >+ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \ >+ $(call cc-option,-mtune=bonnell,$(call >cc-option,-mtune=generic)) > cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) > KBUILD_CFLAGS += $(cflags-y) > >diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu >index 6647ed4..d66e5e3 100644 >--- a/arch/x86/Makefile_32.cpu >+++ b/arch/x86/Makefile_32.cpu >@@ -32,8 +32,8 @@ cflags-$(CONFIG_MCYRIXIII) += $(call >cc-option,-march=c3,-march=i486) $(align)-f > cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686) > cflags-$(CONFIG_MVIAC7) += -march=i686 > cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2) >-cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call >cc-option,-march=core2,-march=i686)) \ >- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) >+cflags-$(CONFIG_MATOM) += $(call >cc-option,-march=bonnell,$(call >cc-option,-march=core2,-march=i686)) \ >+ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic)) > > # AMD Elan support > cflags-$(CONFIG_MELAN) += -march=i486
This just breaks backwards compatibility with older gcc. If you want to add a comment that's fine, though. Nacked-by: hpa -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
