* [PATCH] x86-64: globally use -mno-sse
@ 2012-01-12 12:42 Jan Beulich
2012-01-12 14:09 ` Keir Fraser
0 siblings, 1 reply; 2+ messages in thread
From: Jan Beulich @ 2012-01-12 12:42 UTC (permalink / raw)
To: xen-devel@lists.xensource.com
[-- Attachment #1: Type: text/plain, Size: 742 bytes --]
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@suse.com>
--- 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,$(CC),-fvisibility=hidden,n),n)
--- a/xen/arch/x86/efi/Makefile
+++ b/xen/arch/x86/efi/Makefile
@@ -1,4 +1,4 @@
-CFLAGS += -fshort-wchar -mno-sse
+CFLAGS += -fshort-wchar
obj-y += stub.o
[-- Attachment #2: x86_64-no-SSE.patch --]
[-- Type: text/plain, Size: 769 bytes --]
x86-64: globally use -mno-sse
This eliminates pointless prologue code from functions having variable
argument lists (since that way xmm registers can't possibly be passed).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/arch/x86/Rules.mk
+++ b/xen/arch/x86/Rules.mk
@@ -41,7 +41,7 @@ x86_64 := n
endif
ifeq ($(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
[-- Attachment #3: Type: text/plain, Size: 138 bytes --]
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] x86-64: globally use -mno-sse
2012-01-12 12:42 [PATCH] x86-64: globally use -mno-sse Jan Beulich
@ 2012-01-12 14:09 ` Keir Fraser
0 siblings, 0 replies; 2+ messages in thread
From: Keir Fraser @ 2012-01-12 14:09 UTC (permalink / raw)
To: Jan Beulich, xen-devel@lists.xensource.com
On 12/01/2012 12:42, "Jan Beulich" <JBeulich@suse.com> 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@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
> --- 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
>
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
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2012-01-12 12:42 [PATCH] x86-64: globally use -mno-sse Jan Beulich
2012-01-12 14:09 ` Keir Fraser
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