[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH] tcg: Remove stack protection from helper functions

From: Jan Kiszka
Subject: [Qemu-devel] [PATCH] tcg: Remove stack protection from helper functions
Date: Mon, 26 Sep 2011 09:46:37 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

This increases the overhead of frequently executed helpers.

Signed-off-by: Jan Kiszka <address@hidden>

Maybe this should be applied to more hot-path functions, but I haven't
done any thorough analysis yet.

 Makefile.target |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Makefile.target b/Makefile.target
index 88d2f1f..1cc758d 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -91,7 +91,7 @@ tcg/tcg.o: cpu.h
 # HELPER_CFLAGS is used for all the code compiled with static register
 # variables
-op_helper.o user-exec.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
+op_helper.o user-exec.o: QEMU_CFLAGS := $(subst 
-fstack-protector-all,,$(QEMU_CFLAGS)) $(HELPER_CFLAGS)
 # Note: this is a workaround. The real fix is to avoid compiling
 # cpu_signal_handler() in user-exec.c.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]