Re: [Xen-devel] [PATCH] x86-64: globally use -mno-sse

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 12/01/2012 12:42, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:

> This eliminates pointless prologue code from functions having variable
> argument lists (since that way xmm registers can't possibly be passed).
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Keir Fraser <keir@xxxxxxx>

> --- a/xen/arch/x86/Rules.mk
> +++ b/xen/arch/x86/Rules.mk
> @@ -41,7 +41,7 @@ x86_64 := n
>  endif
>  
>  ifeq ($(TARGET_SUBARCH),x86_64)
> -CFLAGS += -mno-red-zone -fpic
> +CFLAGS += -mno-red-zone -mno-sse -fpic
>  CFLAGS += -fno-asynchronous-unwind-tables
>  # -fvisibility=hidden reduces -fpic cost, if it's available
>  ifneq ($(call cc-option,$(CC),-fvisibility=hidden,n),n)
> --- a/xen/arch/x86/efi/Makefile
> +++ b/xen/arch/x86/efi/Makefile
> @@ -1,4 +1,4 @@
> -CFLAGS += -fshort-wchar -mno-sse
> +CFLAGS += -fshort-wchar
>  
>  obj-y += stub.o
>  
> 
> 
> 
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