diff mbox series

[v2,8/8] x86emul: build with -Os

Message ID 693131a0-4815-36c8-6fb8-cd28bb7b0a08@suse.com (mailing list archive)
State New, archived
Headers show
Series x86emul: a few small steps towards disintegration | expand

Commit Message

Jan Beulich June 15, 2022, 10:01 a.m. UTC 
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 <jbeulich@suse.com>
---
v2: New.
diff mbox series

Patch

--- 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