On 64-bit hosts we are disabling SSE and SSE2. Depending on the compiler however it may use movq instructions for 64-bit transfers even when targeting 32-bit processors; when CR4.OSFXSR is not set, this results in an undefined opcode exception, so tell the compiler to avoid those instructions on 32-bit hosts as well. Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> --- x86/Makefile.i386 | 1 + 1 file changed, 1 insertion(+) diff --git a/x86/Makefile.i386 b/x86/Makefile.i386 index d801b80..be9d6bc 100644 --- a/x86/Makefile.i386 +++ b/x86/Makefile.i386 @@ -1,6 +1,7 @@ cstart.o = $(TEST_DIR)/cstart.o bits = 32 ldarch = elf32-i386 +COMMON_CFLAGS += -mno-sse -mno-sse2 cflatobjs += lib/x86/setjmp32.o -- 2.26.2
