diff options
Diffstat (limited to '0029-x86-also-suppress-use-of-MMX-insns.patch')
| -rw-r--r-- | 0029-x86-also-suppress-use-of-MMX-insns.patch | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/0029-x86-also-suppress-use-of-MMX-insns.patch b/0029-x86-also-suppress-use-of-MMX-insns.patch deleted file mode 100644 index d954cdd..0000000 --- a/0029-x86-also-suppress-use-of-MMX-insns.patch +++ /dev/null @@ -1,39 +0,0 @@ -From 30d3de4c61c297e12662df1fdb89af335947e59d Mon Sep 17 00:00:00 2001 -From: Jan Beulich <jbeulich@suse.com> -Date: Wed, 27 Jul 2022 09:31:31 +0200 -Subject: [PATCH 029/126] x86: also suppress use of MMX insns - -Passing -mno-sse alone is not enough: The compiler may still find -(questionable) reasons to use MMX insns. In particular with gcc12 use -of MOVD+PUNPCKLDQ+MOVQ was observed in an apparent attempt to auto- -vectorize the storing of two adjacent zeroes, 32 bits each. - -Reported-by: ChrisD <chris@dalessio.org> -Signed-off-by: Jan Beulich <jbeulich@suse.com> -Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> -master commit: 6fe2e39a0243bddba60f83b77b972a5922d25eb8 -master date: 2022-07-20 15:48:49 +0200 ---- - xen/arch/x86/arch.mk | 6 +++--- - 1 file changed, 3 insertions(+), 3 deletions(-) - -diff --git a/xen/arch/x86/arch.mk b/xen/arch/x86/arch.mk -index 456e5d5c1ad7..c4337a1a118c 100644 ---- a/xen/arch/x86/arch.mk -+++ b/xen/arch/x86/arch.mk -@@ -37,9 +37,9 @@ $(call as-option-add,CFLAGS,CC,\ - - CFLAGS += -mno-red-zone -fpic - --# Xen doesn't use SSE interally. If the compiler supports it, also skip the --# SSE setup for variadic function calls. --CFLAGS += -mno-sse $(call cc-option,$(CC),-mskip-rax-setup) -+# Xen doesn't use MMX or SSE interally. If the compiler supports it, also skip -+# the SSE setup for variadic function calls. -+CFLAGS += -mno-mmx -mno-sse $(call cc-option,$(CC),-mskip-rax-setup) - - # Compile with thunk-extern, indirect-branch-register if avaiable. - CFLAGS-$(CONFIG_INDIRECT_THUNK) += -mindirect-branch=thunk-extern --- -2.37.4 - |