Emulator code is large and involving it in guest operations cannot be expected to be fast anyway. Help binary size as well as, for release builds at least, compile time by building all involved code with size optimization, independent of the build being a debug or a release one.
The size savings observed in a release build (with AMX and KeyLocker code in place on top of what's upstream) are above 48k of .text, with gcc 11. Signed-off-by: Jan Beulich <jbeul...@suse.com> --- v2: New. --- a/xen/arch/x86/Makefile +++ b/xen/arch/x86/Makefile @@ -89,6 +89,7 @@ hostprogs-y += efi/mkreloc # Allows usercopy.c to include itself $(obj)/usercopy.o: CFLAGS-y += -iquote . +$(obj)/x86_emulate.o: CFLAGS-y += -Os ifneq ($(CONFIG_HVM),y) $(obj)/x86_emulate.o: CFLAGS-y += -Wno-unused-label endif --- a/xen/arch/x86/x86_emulate/Makefile +++ b/xen/arch/x86/x86_emulate/Makefile @@ -1,3 +1,5 @@ +CFLAGS-y += -Os + obj-y += 0f01.o obj-y += 0fae.o obj-y += 0fc7.o
